JPS5617305A - Light branching coupler - Google Patents

Light branching coupler

Info

Publication number
JPS5617305A
JPS5617305A JP9305679A JP9305679A JPS5617305A JP S5617305 A JPS5617305 A JP S5617305A JP 9305679 A JP9305679 A JP 9305679A JP 9305679 A JP9305679 A JP 9305679A JP S5617305 A JPS5617305 A JP S5617305A
Authority
JP
Japan
Prior art keywords
filter
light
lambda2
wavelength
fiber
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.)
Granted
Application number
JP9305679A
Other languages
Japanese (ja)
Other versions
JPS6151768B2 (en
Inventor
Tsutomu Tanaka
Yoshinobu Tsujimoto
Akimoto Serizawa
Katsuji Hattori
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 JP9305679A priority Critical patent/JPS5617305A/en
Publication of JPS5617305A publication Critical patent/JPS5617305A/en
Publication of JPS6151768B2 publication Critical patent/JPS6151768B2/ja
Granted 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
    • G02B6/29346—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 wave or beam interference
    • G02B6/29361—Interference filters, e.g. multilayer coatings, thin film filters, dichroic splitters or mirrors based on multilayers, WDM filters
    • G02B6/2937—In line lens-filtering-lens devices, i.e. elements arranged along a line and mountable in a cylindrical package for compactness, e.g. 3- port device with GRIN lenses sandwiching a single filter operating at normal incidence in a tubular package

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Filters (AREA)

Abstract

PURPOSE:To reduce leakage without increasing the loss of a branching filter much by providing a filter at one terminal of a self-focusing type lens and a reflective mirror, reflecting transmitted light, outside of the filter with an inclination to the optical axis of the lens. CONSTITUTION:At one terminal of self-focusing type lens 3, filter 1 that reflects light of wavelength lambda1 and allows light of wavelength lambda2 to pass through it is provided and outside of it, reflective mirror 2 that reflect transmitted light lambda2 is also provided being inclined to optical axis 4 of lens 3. Lights including those of wavelengths lambda1 and lambda2 from light emission diodes, etc., strike optical fiber 5; and then light of wavelength lambda1 is reflected by filter 1 to strike fiber 6 at fixed position (d) and light of wavelength lambda2, on the other hand, penetrates filter 1 and is reflected by reflective mirror 2 to strike fiber 7. Providing fiber 7 at an adequate position in accordance with wavelength lambda2 reduces leakage without increasing the loss much, so that S/N can be improved.
JP9305679A 1979-07-20 1979-07-20 Light branching coupler Granted JPS5617305A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9305679A JPS5617305A (en) 1979-07-20 1979-07-20 Light branching coupler

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9305679A JPS5617305A (en) 1979-07-20 1979-07-20 Light branching coupler

Publications (2)

Publication Number Publication Date
JPS5617305A true JPS5617305A (en) 1981-02-19
JPS6151768B2 JPS6151768B2 (en) 1986-11-10

Family

ID=14071843

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9305679A Granted JPS5617305A (en) 1979-07-20 1979-07-20 Light branching coupler

Country Status (1)

Country Link
JP (1) JPS5617305A (en)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57181520A (en) * 1981-04-30 1982-11-09 Matsushita Electric Ind Co Ltd Optical branching and mixing device
JPS5811915A (en) * 1981-07-15 1983-01-22 Matsushita Electric Ind Co Ltd Optical transmission device
JPS58149019A (en) * 1982-03-01 1983-09-05 Nippon Telegr & Teleph Corp <Ntt> Optical multiplexer and 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
JPS58149147U (en) * 1982-03-29 1983-10-06 広田　吉弘 Mobile car interior cleaning device
JPS58194011A (en) * 1982-05-10 1983-11-11 Nippon Telegr & Teleph Corp <Ntt> Optical demultiplexer of two-way transmission
US4474424A (en) * 1981-03-20 1984-10-02 At&T Bell Laboratories Optical multi/demultiplexer using interference filters
JPS59185309A (en) * 1983-04-05 1984-10-20 Matsushita Electric Ind Co Ltd Optical multiplexer/demultiplexer
JPS59194726U (en) * 1983-06-09 1984-12-25 日立電線株式会社 optical demultiplexer
JPS6033529A (en) * 1983-08-05 1985-02-20 Matsushita Electric Ind Co Ltd Optical passive parts
US4676584A (en) * 1983-06-22 1987-06-30 Metatech Corporation Fiber optic light coupling assemblies
JPS638610A (en) * 1986-06-30 1988-01-14 Oputosu:Kk One piece bidirectional connector
EP1158328A2 (en) * 2000-05-23 2001-11-28 Alliance Fiber Optics Products Inc. Retro-reflective fiber optic filter with triple-fiber ferrule

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4474424A (en) * 1981-03-20 1984-10-02 At&T Bell Laboratories Optical multi/demultiplexer using interference filters
JPS57181520A (en) * 1981-04-30 1982-11-09 Matsushita Electric Ind Co Ltd Optical branching and mixing device
JPS5811915A (en) * 1981-07-15 1983-01-22 Matsushita Electric Ind Co Ltd Optical transmission device
JPS58160917A (en) * 1981-12-24 1983-09-24 アンストルマン・ソシエテ・アノニム Selector
JPS58149019A (en) * 1982-03-01 1983-09-05 Nippon Telegr & Teleph Corp <Ntt> Optical multiplexer and demultiplexer
JPS58149147U (en) * 1982-03-29 1983-10-06 広田　吉弘 Mobile car interior cleaning device
JPS58194011A (en) * 1982-05-10 1983-11-11 Nippon Telegr & Teleph Corp <Ntt> Optical demultiplexer of two-way transmission
JPS6216404B2 (en) * 1982-05-10 1987-04-13 Nippon Telegraph & Telephone
JPS59185309A (en) * 1983-04-05 1984-10-20 Matsushita Electric Ind Co Ltd Optical multiplexer/demultiplexer
JPS59194726U (en) * 1983-06-09 1984-12-25 日立電線株式会社 optical demultiplexer
US4676584A (en) * 1983-06-22 1987-06-30 Metatech Corporation Fiber optic light coupling assemblies
JPS6033529A (en) * 1983-08-05 1985-02-20 Matsushita Electric Ind Co Ltd Optical passive parts
JPS638610A (en) * 1986-06-30 1988-01-14 Oputosu:Kk One piece bidirectional connector
EP1158328A2 (en) * 2000-05-23 2001-11-28 Alliance Fiber Optics Products Inc. Retro-reflective fiber optic filter with triple-fiber ferrule
EP1158328A3 (en) * 2000-05-23 2004-01-14 Alliance Fiber Optics Products Inc. Retro-reflective fiber optic filter with triple-fiber ferrule

Also Published As

Publication number Publication date
JPS6151768B2 (en) 1986-11-10

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