USPC Patent Classifications

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Class 398 optical communications
uspcdescription
398/1398 optical communications/(1) fault recovery
398/2398 optical communications/(1) fault recovery (2) bypass inoperative element
398/3398 optical communications/(1) fault recovery (2) bypass inoperative element (3) in a ring or loop
398/4398 optical communications/(1) fault recovery (2) bypass inoperative element (3) in a ring or loop (4) using a secondary ring or loop
398/5398 optical communications/(1) fault recovery (2) bypass inoperative element (5) spare channel or standby optical fiber
398/6398 optical communications/(1) fault recovery (6) in a repeater system
398/7398 optical communications/(1) fault recovery (7) wdm
398/8398 optical communications/(1) fault recovery (8) tdm
398/9398 optical communications/(9) diagnostic testing
398/10398 optical communications/(9) diagnostic testing (10) fault location
398/11398 optical communications/(9) diagnostic testing (10) fault location (11) repeater
398/12398 optical communications/(9) diagnostic testing (10) fault location (12) switch
398/13398 optical communications/(9) diagnostic testing (10) fault location (13) fiber or waveguide
398/14398 optical communications/(9) diagnostic testing (10) fault location (14) wdm
398/15398 optical communications/(9) diagnostic testing (10) fault location (15) stop transmission or reduce power
398/16398 optical communications/(9) diagnostic testing (16) test signal
398/17398 optical communications/(9) diagnostic testing (17) fault detection
398/18398 optical communications/(9) diagnostic testing (17) fault detection (18) repeater
398/19398 optical communications/(9) diagnostic testing (17) fault detection (19) switch
398/20398 optical communications/(9) diagnostic testing (17) fault detection (20) optical fiber
398/21398 optical communications/(9) diagnostic testing (17) fault detection (20) optical fiber (21) determined by reflection from break in fiber
398/22398 optical communications/(9) diagnostic testing (17) fault detection (22) transceiver
398/23398 optical communications/(9) diagnostic testing (17) fault detection (23) transmitter
398/24398 optical communications/(9) diagnostic testing (17) fault detection (24) receiver
398/25398 optical communications/(9) diagnostic testing (25) determination of communication parameter
398/26398 optical communications/(9) diagnostic testing (25) determination of communication parameter (26) signal to noise ratio
398/27398 optical communications/(9) diagnostic testing (25) determination of communication parameter (27) bit error rate
398/28398 optical communications/(9) diagnostic testing (25) determination of communication parameter (28) fiber characteristic
398/29398 optical communications/(9) diagnostic testing (25) determination of communication parameter (28) fiber characteristic (29) dispersion
398/30398 optical communications/(9) diagnostic testing (25) determination of communication parameter (30) using supervisory signal
398/31398 optical communications/(9) diagnostic testing (25) determination of communication parameter (30) using supervisory signal (31) different wavelengths for diagnostic and communication
398/32398 optical communications/(9) diagnostic testing (25) determination of communication parameter (30) using supervisory signal (32) pilot signal
398/33398 optical communications/(9) diagnostic testing (25) determination of communication parameter (30) using supervisory signal (33) monitoring
398/34398 optical communications/(9) diagnostic testing (25) determination of communication parameter (34) wdm system
398/35398 optical communications/(9) diagnostic testing (25) determination of communication parameter (35) tdm system
398/36398 optical communications/(9) diagnostic testing (25) determination of communication parameter (36) collision detection
398/37398 optical communications/(9) diagnostic testing (25) determination of communication parameter (37) amplifier or repeater operation
398/38398 optical communications/(9) diagnostic testing (25) determination of communication parameter (38) power
398/39398 optical communications/(39) interference signal transmission or elimination (e.g., jamming or antijamming)
398/40398 optical communications/(40) eavesdropping
398/41398 optical communications/(41) duplex
398/42398 optical communications/(41) duplex (42) wavelength division
398/43398 optical communications/(43) multiplex
398/44398 optical communications/(43) multiplex (44) mode
398/45398 optical communications/(43) multiplex (45) optical switching
398/46398 optical communications/(43) multiplex (45) optical switching (46) hybrid
398/47398 optical communications/(43) multiplex (45) optical switching (46) hybrid (47) time and wavelength
398/48398 optical communications/(43) multiplex (45) optical switching (48) wavelength
398/49398 optical communications/(43) multiplex (45) optical switching (48) wavelength (49) router
398/50398 optical communications/(43) multiplex (45) optical switching (48) wavelength (50) crossconnect
398/51398 optical communications/(43) multiplex (45) optical switching (48) wavelength (51) including photonic packet switching
398/52398 optical communications/(43) multiplex (45) optical switching (52) time
398/53398 optical communications/(43) multiplex (45) optical switching (52) time (53) including delay
398/54398 optical communications/(43) multiplex (45) optical switching (52) time (54) including photonic packet switching
398/55398 optical communications/(43) multiplex (45) optical switching (55) space
398/56398 optical communications/(43) multiplex (45) optical switching (55) space (56) crossconnect
398/57398 optical communications/(43) multiplex (45) optical switching (55) space (57) path finding or path routing
398/58398 optical communications/(43) multiplex (58) optical local area network (lan)
398/59398 optical communications/(43) multiplex (58) optical local area network (lan) (59) ring or loop
398/60398 optical communications/(43) multiplex (58) optical local area network (lan) (60) bus
398/61398 optical communications/(43) multiplex (58) optical local area network (lan) (61) active star
398/62398 optical communications/(43) multiplex (58) optical local area network (lan) (61) active star (62) repeater
398/63398 optical communications/(43) multiplex (58) optical local area network (lan) (63) passive star
398/64398 optical communications/(43) multiplex (58) optical local area network (lan) (63) passive star (64) repeater
398/65398 optical communications/(43) multiplex (65) polarization
398/66398 optical communications/(43) multiplex (66) broadcast and distribution system
398/67398 optical communications/(43) multiplex (66) broadcast and distribution system (67) bidirectional
398/68398 optical communications/(43) multiplex (66) broadcast and distribution system (68) wdm
398/69398 optical communications/(43) multiplex (66) broadcast and distribution system (68) wdm (69) with variable frequency channel assignment
398/70398 optical communications/(43) multiplex (66) broadcast and distribution system (68) wdm (70) hub or central office
398/71398 optical communications/(43) multiplex (66) broadcast and distribution system (68) wdm (70) hub or central office (71) including subscribers
398/72398 optical communications/(43) multiplex (66) broadcast and distribution system (68) wdm (70) hub or central office (71) including subscribers (72) bidirectional
398/73398 optical communications/(43) multiplex (66) broadcast and distribution system (68) wdm (73) bus
398/74398 optical communications/(43) multiplex (74) hybrid
398/75398 optical communications/(43) multiplex (74) hybrid (75) time and wavelength division
398/76398 optical communications/(43) multiplex (76) subcarrier multiplexing
398/77398 optical communications/(43) multiplex (77) code division multiplexing
398/78398 optical communications/(43) multiplex (77) code division multiplexing (78) multiple access (e.g., cdma)
398/79398 optical communications/(43) multiplex (79) wavelength division or frequency division (e.g., raman, brillouin, etc.)
398/80398 optical communications/(43) multiplex (79) wavelength division or frequency division (e.g., raman, brillouin, etc.) (80) soliton
398/81398 optical communications/(43) multiplex (79) wavelength division or frequency division (e.g., raman, brillouin, etc.) (81) dispersion compensation
398/82398 optical communications/(43) multiplex (79) wavelength division or frequency division (e.g., raman, brillouin, etc.) (82) by optical coupling
398/83398 optical communications/(43) multiplex (79) wavelength division or frequency division (e.g., raman, brillouin, etc.) (82) by optical coupling (83) add or drop
398/84398 optical communications/(43) multiplex (79) wavelength division or frequency division (e.g., raman, brillouin, etc.) (82) by optical coupling (83) add or drop (84) grating
398/85398 optical communications/(43) multiplex (79) wavelength division or frequency division (e.g., raman, brillouin, etc.) (82) by optical coupling (83) add or drop (85) filter
398/86398 optical communications/(43) multiplex (79) wavelength division or frequency division (e.g., raman, brillouin, etc.) (82) by optical coupling (86) prism
398/87398 optical communications/(43) multiplex (79) wavelength division or frequency division (e.g., raman, brillouin, etc.) (82) by optical coupling (87) grating
398/88398 optical communications/(43) multiplex (79) wavelength division or frequency division (e.g., raman, brillouin, etc.) (82) by optical coupling (88) lens
398/89398 optical communications/(43) multiplex (79) wavelength division or frequency division (e.g., raman, brillouin, etc.) (89) multiple access (e.g., wdma)
398/90398 optical communications/(43) multiplex (79) wavelength division or frequency division (e.g., raman, brillouin, etc.) (90) electrically controlled single source
398/91398 optical communications/(43) multiplex (79) wavelength division or frequency division (e.g., raman, brillouin, etc.) (91) different sources
398/92398 optical communications/(43) multiplex (79) wavelength division or frequency division (e.g., raman, brillouin, etc.) (91) different sources (92) including pumping
398/93398 optical communications/(43) multiplex (79) wavelength division or frequency division (e.g., raman, brillouin, etc.) (93) including feedback
398/94398 optical communications/(43) multiplex (79) wavelength division or frequency division (e.g., raman, brillouin, etc.) (93) including feedback (94) power control
398/95398 optical communications/(43) multiplex (79) wavelength division or frequency division (e.g., raman, brillouin, etc.) (93) including feedback (95) wavelength control
398/96398 optical communications/(43) multiplex (79) wavelength division or frequency division (e.g., raman, brillouin, etc.) (96) through free space
398/97398 optical communications/(43) multiplex (79) wavelength division or frequency division (e.g., raman, brillouin, etc.) (97) repeater
398/98398 optical communications/(43) multiplex (98) time division
398/99398 optical communications/(43) multiplex (98) time division (99) multiple access (e.g., tdma, csma)
398/100398 optical communications/(43) multiplex (98) time division (100) subscriber system
398/101398 optical communications/(43) multiplex (98) time division (101) by specific optical element
398/102398 optical communications/(43) multiplex (98) time division (102) including delay
398/103398 optical communications/(43) multiplex (98) time division (103) through free space
398/104398 optical communications/(104) underwater
398/105398 optical communications/(104) underwater (105) cable repeater
398/106398 optical communications/(106) remote control
398/107398 optical communications/(106) remote control (107) bidirectional (i.e., monitoring or acknowledge)
398/108398 optical communications/(106) remote control (107) bidirectional (i.e., monitoring or acknowledge) (108) interrogator system
398/109398 optical communications/(106) remote control (109) in industrial environment or hazardous environmrnt
398/110398 optical communications/(106) remote control (109) in industrial environment or hazardous environmrnt (110) through optical fiber or waveguide
398/111398 optical communications/(106) remote control (111) switching
398/112398 optical communications/(106) remote control (112) plural
398/113398 optical communications/(106) remote control (113) through optical fiber or waveguide
398/114398 optical communications/(106) remote control (114) rotating part
398/115398 optical communications/(115) hybrid communication system (e.g., optical and rf)
398/116398 optical communications/(115) hybrid communication system (e.g., optical and rf) (116) including specific optical interface
398/117398 optical communications/(115) hybrid communication system (e.g., optical and rf) (116) including specific optical interface (117) housing or mounting
398/118398 optical communications/(118) optical communication over freee space
398/119398 optical communications/(118) optical communication over freee space (119) compensation
398/120398 optical communications/(118) optical communication over freee space (119) compensation (120) power control
398/121398 optical communications/(118) optical communication over freee space (121) satellite system
398/122398 optical communications/(118) optical communication over freee space (121) satellite system (122) including alignment
398/123398 optical communications/(118) optical communication over freee space (121) satellite system (122) including alignment (123) feedback control
398/124398 optical communications/(118) optical communication over freee space (121) satellite system (124) space to space
398/125398 optical communications/(118) optical communication over freee space (121) satellite system (125) space to ground or ground to space
398/126398 optical communications/(118) optical communication over freee space (126) specific repeater
398/127398 optical communications/(118) optical communication over freee space (127) in an office environment
398/128398 optical communications/(118) optical communication over freee space (128) transceivers
398/129398 optical communications/(118) optical communication over freee space (128) transceivers (129) including alignment
398/130398 optical communications/(118) optical communication over freee space (130) transmitter and receiver
398/131398 optical communications/(118) optical communication over freee space (130) transmitter and receiver (131) including alignment
398/132398 optical communications/(132) photophone
398/133398 optical communications/(132) photophone (133) specific transducer
398/134398 optical communications/(132) photophone (133) specific transducer (134) including optical fiber or waveguide
398/135398 optical communications/(135) optical transceiver
398/136398 optical communications/(135) optical transceiver (136) including compensation
398/137398 optical communications/(135) optical transceiver (137) including feedback
398/138398 optical communications/(135) optical transceiver (138) single device as transmitter and receiver
398/139398 optical communications/(135) optical transceiver (139) including optical fiber or waveguide
398/140398 optical communications/(140) transmitter and receiver system
398/141398 optical communications/(140) transmitter and receiver system (141) including optical waveguide
398/142398 optical communications/(140) transmitter and receiver system (141) including optical waveguide (142) specific type of fiber or waveguide
398/143398 optical communications/(140) transmitter and receiver system (141) including optical waveguide (142) specific type of fiber or waveguide (143) multimode
398/144398 optical communications/(140) transmitter and receiver system (141) including optical waveguide (142) specific type of fiber or waveguide (144) monomode
398/145398 optical communications/(140) transmitter and receiver system (141) including optical waveguide (142) specific type of fiber or waveguide (145) redundant fibers
398/146398 optical communications/(140) transmitter and receiver system (141) including optical waveguide (146) soliton
398/147398 optical communications/(140) transmitter and receiver system (141) including optical waveguide (147) dispersion compensation
398/148398 optical communications/(140) transmitter and receiver system (141) including optical waveguide (147) dispersion compensation (148) using dispersion compensation optical fiber (e.g., dcof)
398/149398 optical communications/(140) transmitter and receiver system (141) including optical waveguide (147) dispersion compensation (149) using equalizing filter (e.g., interferometer, grating)
398/150398 optical communications/(140) transmitter and receiver system (141) including optical waveguide (147) dispersion compensation (150) using optical phase conjugation
398/151398 optical communications/(140) transmitter and receiver system (151) presence detection
398/152398 optical communications/(140) transmitter and receiver system (152) including polarization
398/153398 optical communications/(140) transmitter and receiver system (153) one transmitter, plural receivers
398/154398 optical communications/(140) transmitter and receiver system (154) including synchronization
398/155398 optical communications/(140) transmitter and receiver system (154) including synchronization (155) clock recovery
398/156398 optical communications/(140) transmitter and receiver system (156) including alignment between transmitter and receiver
398/157398 optical communications/(140) transmitter and receiver system (157) including pumping
398/158398 optical communications/(140) transmitter and receiver system (158) including compensation
398/159398 optical communications/(140) transmitter and receiver system (158) including compensation (159) reducing distortion or dispersion
398/160398 optical communications/(140) transmitter and receiver system (158) including compensation (160) using optical amplifier
398/161398 optical communications/(140) transmitter and receiver system (158) including compensation (161) using delay
398/162398 optical communications/(140) transmitter and receiver system (162) including feedback from receiver
398/163398 optical communications/(140) transmitter and receiver system (163) including electrical oscillator
398/164398 optical communications/(140) transmitter and receiver system (164) including optical circuit board
398/165398 optical communications/(140) transmitter and receiver system (165) plural stations
398/166398 optical communications/(140) transmitter and receiver system (165) plural stations (166) address directing connections
398/167398 optical communications/(140) transmitter and receiver system (165) plural stations (167) unidirectional or loopback
398/167.5398 optical communications/(140) transmitter and receiver system (165) plural stations (167.5) central or master station
398/168398 optical communications/(140) transmitter and receiver system (168) passive system
398/169398 optical communications/(140) transmitter and receiver system (168) passive system (169) retroreflection
398/170398 optical communications/(140) transmitter and receiver system (170) retroreflection
398/171398 optical communications/(140) transmitter and receiver system (171) received signal supplies power distribution to diverse devices
398/172398 optical communications/(140) transmitter and receiver system (172) including visible light modulation
398/173398 optical communications/(173) optical repeater system
398/174398 optical communications/(173) optical repeater system (174) demodulating
398/175398 optical communications/(173) optical repeater system (175) regenerative
398/176398 optical communications/(173) optical repeater system (175) regenerative (176) modulation conversion
398/177398 optical communications/(173) optical repeater system (177) monitoring
398/178398 optical communications/(173) optical repeater system (178) specific optical waveguide
398/179398 optical communications/(173) optical repeater system (178) specific optical waveguide (179) soliton
398/180398 optical communications/(173) optical repeater system (180) specific optical elements
398/181398 optical communications/(173) optical repeater system (181) supervisory signal by repeater
398/182398 optical communications/(182) transmitter
398/183398 optical communications/(182) transmitter (183) having particular modulation
398/184398 optical communications/(182) transmitter (183) having particular modulation (184) including polarization
398/185398 optical communications/(182) transmitter (183) having particular modulation (185) hybrid modulation
398/186398 optical communications/(182) transmitter (183) having particular modulation (186) intensity modulation
398/187398 optical communications/(182) transmitter (183) having particular modulation (187) frequency modulation
398/188398 optical communications/(182) transmitter (183) having particular modulation (188) phase modulation
398/189398 optical communications/(182) transmitter (183) having particular modulation (189) pulse modulation
398/190398 optical communications/(182) transmitter (183) having particular modulation (189) pulse modulation (190) pulse-code
398/191398 optical communications/(182) transmitter (183) having particular modulation (189) pulse modulation (191) pulse time
398/192398 optical communications/(182) transmitter (192) including compensation
398/193398 optical communications/(182) transmitter (192) including compensation (193) precompensation (e.g., prechirping, predistortion
398/194398 optical communications/(182) transmitter (192) including compensation (194) for noise or distortion
398/195398 optical communications/(182) transmitter (192) including compensation (195) including feedback
398/196398 optical communications/(182) transmitter (192) including compensation (195) including feedback (196) for wavelength control
398/197398 optical communications/(182) transmitter (192) including compensation (195) including feedback (197) for power control
398/198398 optical communications/(182) transmitter (192) including compensation (195) including feedback (198) for modulator control
398/199398 optical communications/(182) transmitter (199) chirping
398/200398 optical communications/(182) transmitter (200) including optical waveguide
398/201398 optical communications/(182) transmitter (201) including specific optical elements
398/202398 optical communications/(202) receiver
398/203398 optical communications/(202) receiver (203) homodyne
398/204398 optical communications/(202) receiver (204) heterodyne
398/205398 optical communications/(202) receiver (204) heterodyne (205) including polarization
398/206398 optical communications/(202) receiver (204) heterodyne (205) including polarization (206) having feedback
398/207398 optical communications/(202) receiver (204) heterodyne (207) specific optical elements
398/208398 optical communications/(202) receiver (208) including postcompensation
398/209398 optical communications/(202) receiver (208) including postcompensation (209) feedback
398/210398 optical communications/(202) receiver (208) including postcompensation (210) amplitude
398/211398 optical communications/(202) receiver (208) including postcompensation (211) intermodulation
398/212398 optical communications/(202) receiver (212) including optical element (e.g., lens, mirror, etc.)
398/213398 optical communications/(202) receiver (212) including optical element (e.g., lens, mirror, etc.) (213) having feedback
398/214398 optical communications/(202) receiver (214) including optical waveguide

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