JPS54138453A - Optical branching coupler - Google Patents

Optical branching coupler

Info

Publication number
JPS54138453A
JPS54138453A JP4698078A JP4698078A JPS54138453A JP S54138453 A JPS54138453 A JP S54138453A JP 4698078 A JP4698078 A JP 4698078A JP 4698078 A JP4698078 A JP 4698078A JP S54138453 A JPS54138453 A JP S54138453A
Authority
JP
Japan
Prior art keywords
lens
lambda2
wavelengths
face
light
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
JP4698078A
Other languages
Japanese (ja)
Inventor
Tsutomu Tanaka
Akimoto Serizawa
Katsuji Hattori
Yoshinobu Tsujimoto
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 JP4698078A priority Critical patent/JPS54138453A/en
Publication of JPS54138453A publication Critical patent/JPS54138453A/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
    • G02B6/29331—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 evanescent wave coupling
    • G02B6/29332—Wavelength selective couplers, i.e. based on evanescent coupling between light guides, e.g. fused fibre couplers with transverse coupling between fibres having different propagation constant wavelength dependency
    • 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
    • G02B6/29371—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 principle based on material dispersion
    • G02B6/29373—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 principle based on material dispersion utilising a bulk dispersive element, e.g. prism

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Couplings Of Light Guides (AREA)

Abstract

PURPOSE:To eliminate insertion loss of light in a simple constituion, by disposing optical fibers to propagate lights of differnt wavelengths of each end face of self- converging lens to converge lights of different wavelengths. CONSTITUTION:Wavelengths lambda1, lambda2 are set at 0.83 mum, 1.3mum, respectively. When a rod lens 5 of multicomponent glass material measuring 1 mm in diameter is used, period lengths L1, L2 of wavelengths lambda1, lambda2 become 11.14 mm, 12.58 mm, respectively. Therefore, when the length of the lens 5 is set to 50.1 mm, the light of wavelength lambda1 is converged at an end face B beneath the axis of the lens 5, while the light of wavelength lambda2 is converged at a point 0.2 mm behind the end face B above the axis of the lens 5. When optical fibers 8, 7 are secured to these positions respectively, the lights of wavelengths lambda1, lambda2 propagate through the optical fibers 8, 7. Epoxy resin or the like may be buried in the space between the end face B of the lens 5 and the optical fiber 7. Thus, in a simple constitution, the insertion loss of light may be almost completely eliminated.
JP4698078A 1978-04-19 1978-04-19 Optical branching coupler Pending JPS54138453A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4698078A JPS54138453A (en) 1978-04-19 1978-04-19 Optical branching coupler

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4698078A JPS54138453A (en) 1978-04-19 1978-04-19 Optical branching coupler

Publications (1)

Publication Number Publication Date
JPS54138453A true JPS54138453A (en) 1979-10-26

Family

ID=12762372

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4698078A Pending JPS54138453A (en) 1978-04-19 1978-04-19 Optical branching coupler

Country Status (1)

Country Link
JP (1) JPS54138453A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59216119A (en) * 1983-05-23 1984-12-06 Matsushita Electric Ind Co Ltd Light emission module
JPS60101508A (en) * 1983-10-11 1985-06-05 リーニユ、テレグラフイク、エ、テレフオニク、エル、テ、テ Light wavelength multiplexer and demultiplexer for bidirectional
WO2003038499A1 (en) * 2001-11-01 2003-05-08 Mitsubishi Rayon Co.,Ltd. Optical multiplexer/demultiplexer, optical multiplexing/demultiplexing method, and optical filter

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59216119A (en) * 1983-05-23 1984-12-06 Matsushita Electric Ind Co Ltd Light emission module
JPS60101508A (en) * 1983-10-11 1985-06-05 リーニユ、テレグラフイク、エ、テレフオニク、エル、テ、テ Light wavelength multiplexer and demultiplexer for bidirectional
JPH0439642B2 (en) * 1983-10-11 1992-06-30
WO2003038499A1 (en) * 2001-11-01 2003-05-08 Mitsubishi Rayon Co.,Ltd. Optical multiplexer/demultiplexer, optical multiplexing/demultiplexing method, and optical filter
US7043113B2 (en) 2001-11-01 2006-05-09 Mitsubishi Rayon Co., Ltd. Optical multi/demultiplexer, optical multi/demultiplexing method, and optical filter
CN1307447C (en) * 2001-11-01 2007-03-28 三菱丽阳株式会社 Optical multi/demultiplexer, optical multi/demultiplexing method, and optical filter

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