JPS5621107A - Light isolator coupling device - Google Patents

Light isolator coupling device

Info

Publication number
JPS5621107A
JPS5621107A JP9574379A JP9574379A JPS5621107A JP S5621107 A JPS5621107 A JP S5621107A JP 9574379 A JP9574379 A JP 9574379A JP 9574379 A JP9574379 A JP 9574379A JP S5621107 A JPS5621107 A JP S5621107A
Authority
JP
Japan
Prior art keywords
light
glass plate
incident side
isolator
lens
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
JP9574379A
Other languages
Japanese (ja)
Inventor
Hiroo Yonezu
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP9574379A priority Critical patent/JPS5621107A/en
Publication of JPS5621107A publication Critical patent/JPS5621107A/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
    • G02B6/42—Coupling light guides with opto-electronic elements
    • G02B6/4201—Packages, e.g. shape, construction, internal or external details
    • G02B6/4204—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
    • G02B6/4207—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms with optical elements reducing the sensitivity to optical feedback
    • G02B6/4208—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms with optical elements reducing the sensitivity to optical feedback using non-reciprocal elements or birefringent plates, i.e. quasi-isolators
    • G02B6/4209—Optical features

Abstract

PURPOSE:To surely prevent the light reflection on the incident side by a simple method by disposing a transparent plate or optical fiber in the light beam west position on the incident side of a light isolator and bonding and fixing both by means of an adhesive agent of roughly equal refractive indexes. CONSTITUTION:A light isolator 10 is provided with circular cylindrical columns 12, 12' in such a manner that parallel beams 11 pass therein. Sufficient nonreflection treatment is applied between the isolator 10 and the lenses 12, 12'. A glass plate 18 of about 1mm. thickness is adhered by means of an epoxy resin 19 to the front face of the incident side lens 12. If the refractive indexes of the glass plate 18, resin 19 and lens 12 are selected roughly equal, the reflection at the beam west 13 may be made 0-0.01. On the other hand, the reflected light on the front face of the glass plate 18 is deviated largely from the beam west position and therefore it hardly returns to a semiconductor laser 14 by passing through a coupling lens 16. Even when an optical fiber 20 is adhered by a resin 22 in place of the glass plate 18, the light reflection on the incident side may be surely prevented in a similar manner.
JP9574379A 1979-07-27 1979-07-27 Light isolator coupling device Pending JPS5621107A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9574379A JPS5621107A (en) 1979-07-27 1979-07-27 Light isolator coupling device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9574379A JPS5621107A (en) 1979-07-27 1979-07-27 Light isolator coupling device

Publications (1)

Publication Number Publication Date
JPS5621107A true JPS5621107A (en) 1981-02-27

Family

ID=14145964

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9574379A Pending JPS5621107A (en) 1979-07-27 1979-07-27 Light isolator coupling device

Country Status (1)

Country Link
JP (1) JPS5621107A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04270307A (en) * 1990-07-05 1992-09-25 American Teleph & Telegr Co <Att> Optical secondary assembled part
JPH0520015U (en) * 1991-08-29 1993-03-12 日本電気株式会社 Receptacle type optical module
WO2005114283A1 (en) * 2004-05-21 2005-12-01 Bookham Technology Plc Grin lens with barrier layer for use in electro-optical package
JP2007052054A (en) * 2005-08-15 2007-03-01 Japan Aviation Electronics Industry Ltd Optical fiber device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5342845A (en) * 1976-09-30 1978-04-18 Nippon Telegr & Teleph Corp <Ntt> Photo coupling device
JPS5342846A (en) * 1976-09-30 1978-04-18 Nippon Telegr & Teleph Corp <Ntt> Photo coupling device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5342845A (en) * 1976-09-30 1978-04-18 Nippon Telegr & Teleph Corp <Ntt> Photo coupling device
JPS5342846A (en) * 1976-09-30 1978-04-18 Nippon Telegr & Teleph Corp <Ntt> Photo coupling device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04270307A (en) * 1990-07-05 1992-09-25 American Teleph & Telegr Co <Att> Optical secondary assembled part
JPH0520015U (en) * 1991-08-29 1993-03-12 日本電気株式会社 Receptacle type optical module
WO2005114283A1 (en) * 2004-05-21 2005-12-01 Bookham Technology Plc Grin lens with barrier layer for use in electro-optical package
JP2007052054A (en) * 2005-08-15 2007-03-01 Japan Aviation Electronics Industry Ltd Optical fiber device

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