JPS55105211A - Photo branching and coupling device - Google Patents

Photo branching and coupling device

Info

Publication number
JPS55105211A
JPS55105211A JP1370079A JP1370079A JPS55105211A JP S55105211 A JPS55105211 A JP S55105211A JP 1370079 A JP1370079 A JP 1370079A JP 1370079 A JP1370079 A JP 1370079A JP S55105211 A JPS55105211 A JP S55105211A
Authority
JP
Japan
Prior art keywords
wavelength
mirror
optical fibers
fibers
branching
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
JP1370079A
Other languages
Japanese (ja)
Inventor
Katsuji Hattori
Tetsuo Taniuchi
Yoshinobu Tsujimoto
Akimoto Serizawa
Tsutomu Tanaka
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP1370079A priority Critical patent/JPS55105211A/en
Publication of JPS55105211A publication Critical patent/JPS55105211A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/26—Optical coupling means
    • G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
    • G02B6/293—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
    • G02B6/29304—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means operating by diffraction, e.g. grating
    • G02B6/29305—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means operating by diffraction, e.g. grating as bulk element, i.e. free space arrangement external to a light guide
    • G02B6/2931—Diffractive element operating in reflection

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Communication System (AREA)

Abstract

PURPOSE:To obtain the photo branching and coupling device of less insertion losses and crosstalk free from wavelength aberrations by using optical fibers, plane diffraction grating and concave reflecting mirror, in an optical communication system. CONSTITUTION:Optical fibers 1 consists of the 1st fiber which transmits light signal of plural wavelengths and plural optical fibers which transmit the specific wavelength light signal. The end part of the fibers 1 is disposed near the focus of a reflecting concave mirror 2. Now, the light containing multiple wavelengths emitted from the fibers 1 is reflected by the mirror 2, is diffracted by a diffraction grating 3, again returns to the mirror 2 and is received in the plural optical fibers with a slight change in position by each wavelength, whereby branching is completed. As a result of this, no wavelength aberrations exist because no lenses are used. In addition, the wavelength differences among channels may be taken smaller and crosstalk reduced as well.
JP1370079A 1979-02-07 1979-02-07 Photo branching and coupling device Pending JPS55105211A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1370079A JPS55105211A (en) 1979-02-07 1979-02-07 Photo branching and coupling device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1370079A JPS55105211A (en) 1979-02-07 1979-02-07 Photo branching and coupling device

Publications (1)

Publication Number Publication Date
JPS55105211A true JPS55105211A (en) 1980-08-12

Family

ID=11840473

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1370079A Pending JPS55105211A (en) 1979-02-07 1979-02-07 Photo branching and coupling device

Country Status (1)

Country Link
JP (1) JPS55105211A (en)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0073300A2 (en) * 1981-08-27 1983-03-09 Philips Kommunikations Industrie AG Device for the separate decoupling of optical signals having different wavelengths
JPS5854313A (en) * 1981-09-07 1983-03-31 エヌ・ベ−・フイリツプス・フル−イランペンフアブリケン Optical demultiplexer
JPS58160917A (en) * 1981-12-24 1983-09-24 アンストルマン・ソシエテ・アノニム Selector
JPS59182413A (en) * 1983-03-28 1984-10-17 ポラロイド・コ−ポレ−シヨン Optical fiber coupler
JPS60143306A (en) * 1983-10-03 1985-07-29 アルカテル・エヌ・ブイ Wavelength split optical multiplexer/demultiplexer
US4723829A (en) * 1982-10-12 1988-02-09 U.S. Philips Corporation Optical wavelength demultiplexer
US4744618A (en) * 1982-05-03 1988-05-17 Siemens Aktiengesellschaft Optical device for use as a multiplexer or demultiplexer in accordance with the diffraction grating principle
JPH01128007A (en) * 1987-11-12 1989-05-19 Matsushita Electric Ind Co Ltd Optical tuner
JPH01128006A (en) * 1987-11-12 1989-05-19 Matsushita Electric Ind Co Ltd Optical tuner
JPH01128008A (en) * 1987-11-12 1989-05-19 Matsushita Electric Ind Co Ltd Optical tuner
JPH01172910A (en) * 1987-12-28 1989-07-07 Matsushita Electric Ind Co Ltd Optical tuner
JPH01316708A (en) * 1988-06-16 1989-12-21 Matsushita Electric Ind Co Ltd Optical demultiplexer
JP2000028847A (en) * 1998-06-04 2000-01-28 Instruments Sa Multiplexer

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS556320A (en) * 1978-06-27 1980-01-17 Ritsuo Hasumi Spectral module
JPS5521011A (en) * 1978-07-30 1980-02-14 Ritsuo Hasumi Thin fllm spectral module
JPS5535330A (en) * 1978-09-04 1980-03-12 Nippon Telegr & Teleph Corp <Ntt> Low loss diffraction grating branching filter

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS556320A (en) * 1978-06-27 1980-01-17 Ritsuo Hasumi Spectral module
JPS5521011A (en) * 1978-07-30 1980-02-14 Ritsuo Hasumi Thin fllm spectral module
JPS5535330A (en) * 1978-09-04 1980-03-12 Nippon Telegr & Teleph Corp <Ntt> Low loss diffraction grating branching filter

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0073300A2 (en) * 1981-08-27 1983-03-09 Philips Kommunikations Industrie AG Device for the separate decoupling of optical signals having different wavelengths
JPS5854313A (en) * 1981-09-07 1983-03-31 エヌ・ベ−・フイリツプス・フル−イランペンフアブリケン Optical demultiplexer
JPS58160917A (en) * 1981-12-24 1983-09-24 アンストルマン・ソシエテ・アノニム Selector
US4744618A (en) * 1982-05-03 1988-05-17 Siemens Aktiengesellschaft Optical device for use as a multiplexer or demultiplexer in accordance with the diffraction grating principle
US4723829A (en) * 1982-10-12 1988-02-09 U.S. Philips Corporation Optical wavelength demultiplexer
JPS59182413A (en) * 1983-03-28 1984-10-17 ポラロイド・コ−ポレ−シヨン Optical fiber coupler
JPS60143306A (en) * 1983-10-03 1985-07-29 アルカテル・エヌ・ブイ Wavelength split optical multiplexer/demultiplexer
JPH01128007A (en) * 1987-11-12 1989-05-19 Matsushita Electric Ind Co Ltd Optical tuner
JPH01128006A (en) * 1987-11-12 1989-05-19 Matsushita Electric Ind Co Ltd Optical tuner
JPH01128008A (en) * 1987-11-12 1989-05-19 Matsushita Electric Ind Co Ltd Optical tuner
JPH01172910A (en) * 1987-12-28 1989-07-07 Matsushita Electric Ind Co Ltd Optical tuner
JPH01316708A (en) * 1988-06-16 1989-12-21 Matsushita Electric Ind Co Ltd Optical demultiplexer
JP2000028847A (en) * 1998-06-04 2000-01-28 Instruments Sa Multiplexer

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