JPS6451734A - Bidirectional coherent light communication system - Google Patents

Bidirectional coherent light communication system

Info

Publication number
JPS6451734A
JPS6451734A JP62208467A JP20846787A JPS6451734A JP S6451734 A JPS6451734 A JP S6451734A JP 62208467 A JP62208467 A JP 62208467A JP 20846787 A JP20846787 A JP 20846787A JP S6451734 A JPS6451734 A JP S6451734A
Authority
JP
Japan
Prior art keywords
light
optical
transmission line
station
light source
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP62208467A
Other languages
Japanese (ja)
Inventor
Hiroshi Onaka
Hideo Kuwabara
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP62208467A priority Critical patent/JPS6451734A/en
Publication of JPS6451734A publication Critical patent/JPS6451734A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To simplify the constitution of a station by applying the detection of a slave station by a photodetector receiving a signal light from a master station and induced Brillouin scattering light caused in an optical transmission line by a signal light from a transmission light source of a slave station. CONSTITUTION:An output light of a transmission light source 12 in a master station is modulated directly by a drive power supply and sent to an optical transmission line 18 via an optical mixer 16. A local oscillated light from a local oscillation light source 20 is mixed with a phase modulation light from the slave station by the optical mixer 16, led to a photodetector 22 and sent to a demodulation circuit 26 via an amplifier 24 and the original signal is restored. The radiated light from the transmission light source 32 of the slave station is sent to the optical transmission line 18 via a phase modulator 34 and an optical mixer 36. The light caused by the included Brillouin scattering in the transmission line 18 is inputted to the photodetector 38 via the optical mixer 36 together with the modulation light from the master station and the original signal is recovered by the demodulator 38.
JP62208467A 1987-08-21 1987-08-21 Bidirectional coherent light communication system Pending JPS6451734A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62208467A JPS6451734A (en) 1987-08-21 1987-08-21 Bidirectional coherent light communication system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62208467A JPS6451734A (en) 1987-08-21 1987-08-21 Bidirectional coherent light communication system

Publications (1)

Publication Number Publication Date
JPS6451734A true JPS6451734A (en) 1989-02-28

Family

ID=16556663

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62208467A Pending JPS6451734A (en) 1987-08-21 1987-08-21 Bidirectional coherent light communication system

Country Status (1)

Country Link
JP (1) JPS6451734A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022174656A1 (en) * 2021-02-18 2022-08-25 中兴通讯股份有限公司 Coherent detection method, apparatus, and system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022174656A1 (en) * 2021-02-18 2022-08-25 中兴通讯股份有限公司 Coherent detection method, apparatus, and system

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