JPS5532036A - Light isolator - Google Patents

Light isolator

Info

Publication number
JPS5532036A
JPS5532036A JP10446278A JP10446278A JPS5532036A JP S5532036 A JPS5532036 A JP S5532036A JP 10446278 A JP10446278 A JP 10446278A JP 10446278 A JP10446278 A JP 10446278A JP S5532036 A JPS5532036 A JP S5532036A
Authority
JP
Japan
Prior art keywords
optical guide
light
branched
branch
input end
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
JP10446278A
Other languages
Japanese (ja)
Inventor
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 JP10446278A priority Critical patent/JPS5532036A/en
Publication of JPS5532036A publication Critical patent/JPS5532036A/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
    • G02B6/2804—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals forming multipart couplers without wavelength selective elements, e.g. "T" couplers, star couplers

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Light Guides In General And Applications Therefor (AREA)
  • Optical Integrated Circuits (AREA)

Abstract

PURPOSE:To branch light only when it is the input light from the specified direction and enable transmission defining to be accuraly accomplished by so forming the isolator that it has an optical guide and the optical guide branched from this and the branch optical guide is absorbed. CONSTITUTION:The first optical guide 1 and the second optical guide 2 (called branch optical guide) branched from this are provided. The left of the optical guide 1 is the input end P1 and the right the output end P2. One end of the branch optical guide 2 is the non-reflecting absorption end P3 which takes matching of refractive indices so as not to allow light to reflect. The light entering from the input end P1 is mostly fetched out to the output end P2 and the loss of light power is small. The light entering from output end P2 is branched to the input end P1 and absorption end P3 and its conversion to radiation mode is large and the light power obtainable at the input end P1 is less than 1/2 the initial one. Namely, with this structure the losses are low in the transmission direction of light and are high in the opposite direction and therefore the transmission defining as an isolator is accurately accomplished.
JP10446278A 1978-08-29 1978-08-29 Light isolator Pending JPS5532036A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10446278A JPS5532036A (en) 1978-08-29 1978-08-29 Light isolator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10446278A JPS5532036A (en) 1978-08-29 1978-08-29 Light isolator

Publications (1)

Publication Number Publication Date
JPS5532036A true JPS5532036A (en) 1980-03-06

Family

ID=14381247

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10446278A Pending JPS5532036A (en) 1978-08-29 1978-08-29 Light isolator

Country Status (1)

Country Link
JP (1) JPS5532036A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6159421A (en) * 1984-08-31 1986-03-26 Fujitsu Ltd Optical modulator with isolator
JPH0511103U (en) * 1991-07-25 1993-02-12 京セラ株式会社 Fiber type optical isolator
JPH07283485A (en) * 1992-11-24 1995-10-27 Internatl Business Mach Corp <Ibm> Waveguide type optical isolator
US7110429B2 (en) 2003-02-13 2006-09-19 Samsung Electronics Co., Ltd. Distributed feedback laser

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6159421A (en) * 1984-08-31 1986-03-26 Fujitsu Ltd Optical modulator with isolator
JPH0511103U (en) * 1991-07-25 1993-02-12 京セラ株式会社 Fiber type optical isolator
JPH07283485A (en) * 1992-11-24 1995-10-27 Internatl Business Mach Corp <Ibm> Waveguide type optical isolator
US7110429B2 (en) 2003-02-13 2006-09-19 Samsung Electronics Co., Ltd. Distributed feedback laser

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