JPS63287125A - Wavelength multiplex bidirectional transmission method - Google Patents

Wavelength multiplex bidirectional transmission method

Info

Publication number
JPS63287125A
JPS63287125A JP12122187A JP12122187A JPS63287125A JP S63287125 A JPS63287125 A JP S63287125A JP 12122187 A JP12122187 A JP 12122187A JP 12122187 A JP12122187 A JP 12122187A JP S63287125 A JPS63287125 A JP S63287125A
Authority
JP
Grant status
Application
Patent type
Prior art keywords
λ
optical
light
wavelength
coupler
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
JP12122187A
Inventor
Katsuyuki Imoto
Masaru Miyazaki
Hirohisa Sano
Original Assignee
Hitachi 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

Links

Abstract

PURPOSE: To realize multiplex bidirectional transmission system with low cost and with excellent optical isolation between wavelengths by using an optical multiplexer/demultiplexer composed of three directional couplers of the same structure and a semiconductor optical element.
CONSTITUTION: An optical signal of wavelengths λ1, λ3 propagated through an optical fiber 6-1 is demultiplexed by a directional coupler 18-1 and the light of wavelength λ1 is outputted to a directional coupler 18-2 and the light of wavelength λ3 is outputted to a directional coupler 18-3. The light of wavelength λ1 made incident on the coupler 18-2 and the light of wavelength λ3 incident on the coupler 18-3 are given respectively to light receiving elements 2, 4. The other wavelength components λ3, λ1 leaked to the couplers 18-2, 18-3 are demultiplexed to output waveguides 19-5, 19-7, then the inter-channel interference between the wavelengths λ1, λ3 are suppressed. Similarly, the optical signals λ4, λ2 of the light emitting elements 1, 3 are outputted to the optical fiber 6-2 without being leaked to the light receiving elements 2 and 4 and transmitted to the opposed optical module 8.
COPYRIGHT: (C)1988,JPO&Japio
JP12122187A 1987-05-20 1987-05-20 Wavelength multiplex bidirectional transmission method Pending JPS63287125A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12122187A JPS63287125A (en) 1987-05-20 1987-05-20 Wavelength multiplex bidirectional transmission method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12122187A JPS63287125A (en) 1987-05-20 1987-05-20 Wavelength multiplex bidirectional transmission method

Publications (1)

Publication Number Publication Date
JPS63287125A true true JPS63287125A (en) 1988-11-24

Family

ID=14805891

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12122187A Pending JPS63287125A (en) 1987-05-20 1987-05-20 Wavelength multiplex bidirectional transmission method

Country Status (1)

Country Link
JP (1) JPS63287125A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05289120A (en) * 1992-04-09 1993-11-05 Fujitsu Ltd Optical waveguide device
FR2768567A1 (en) * 1997-09-12 1999-03-19 France Telecom optical integrated dispatchable source wavelength, manufacturing process thereof, application to transceiver modules and bidirectional transmission systems
JP2001230733A (en) * 2000-02-16 2001-08-24 Kdd Submarine Cable Systems Inc Bidirectional wavelength multiplex optical communication system
JP2005333264A (en) * 2004-05-18 2005-12-02 Ntt Electornics Corp Single-core bidirectional optical wavelength multiplex transmission system and transceiver

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05289120A (en) * 1992-04-09 1993-11-05 Fujitsu Ltd Optical waveguide device
FR2768567A1 (en) * 1997-09-12 1999-03-19 France Telecom optical integrated dispatchable source wavelength, manufacturing process thereof, application to transceiver modules and bidirectional transmission systems
EP0903818A1 (en) * 1997-09-12 1999-03-24 France Telecom Integrated optical device with wavelength selective switching and method of fabrication
JP2001230733A (en) * 2000-02-16 2001-08-24 Kdd Submarine Cable Systems Inc Bidirectional wavelength multiplex optical communication system
JP4507032B2 (en) * 2000-02-16 2010-07-21 Kddi株式会社 Bi-directional wavelength division multiplexing optical communication system
JP2005333264A (en) * 2004-05-18 2005-12-02 Ntt Electornics Corp Single-core bidirectional optical wavelength multiplex transmission system and transceiver
JP4597578B2 (en) * 2004-05-18 2010-12-15 Nttエレクトロニクス株式会社 Single-core bidirectional optical wavelength multiplexing transmission system and transceiver device

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