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JPS54147059A - Optical device - Google Patents

Optical device

Info

Publication number
JPS54147059A
JPS54147059A JP5619178A JP5619178A JPS54147059A JP S54147059 A JPS54147059 A JP S54147059A JP 5619178 A JP5619178 A JP 5619178A JP 5619178 A JP5619178 A JP 5619178A JP S54147059 A JPS54147059 A JP S54147059A
Authority
JP
Japan
Prior art keywords
crystal
plates
double refractive
light
crystal plate
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
JP5619178A
Other languages
Japanese (ja)
Other versions
JPS6051690B2 (en
Inventor
Teruhito Matsui
Yoshitoku Nomura
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP5619178A priority Critical patent/JPS6051690B2/en
Publication of JPS54147059A publication Critical patent/JPS54147059A/en
Publication of JPS6051690B2 publication Critical patent/JPS6051690B2/en
Expired legal-status Critical Current

Links

Abstract

PURPOSE: To eliminate loss even against non-modulated light by interposing a crystal plate having Faraday effect betweeen a plurality of double refractive crystal plates.
CONSTITUTION: Double refractive crystal plates 11, 13, 14 which are cut out from uniaxial crystal in such a manner that the optical axis thereof inclines to the surface and have been polished to parallel flat plates are so disposed that the double refractive crystal plates 13, 14 assume an angle of 45° to the double refractive crystal plate 11 with the incident ray direction 10 as an axis. In addition, a crystal plate 12 which is formed by YIG, etc. and has Faraday effect is interposed between the double refractive crystal plates 11, 13. Then, the non-polarized light 10 coming from the left side is separated to the light having mutually perpendicular polarization within the crystal of the double refractive crystal plate 11, after which the plane of polarization is rotated 45° by the crystal plate 12, thence the light having the polarization direction parallel to the optical axis of the double refractive crystal plates 13, 14 advances diagonally within the crystals of these plates 13, 14, and is again combined to one light, which is then emitted.
COPYRIGHT: (C)1979,JPO&Japio
JP5619178A 1978-05-11 1978-05-11 optical device Expired JPS6051690B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5619178A JPS6051690B2 (en) 1978-05-11 1978-05-11 optical device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5619178A JPS6051690B2 (en) 1978-05-11 1978-05-11 optical device

Publications (2)

Publication Number Publication Date
JPS54147059A true JPS54147059A (en) 1979-11-16
JPS6051690B2 JPS6051690B2 (en) 1985-11-15

Family

ID=13020207

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5619178A Expired JPS6051690B2 (en) 1978-05-11 1978-05-11 optical device

Country Status (1)

Country Link
JP (1) JPS6051690B2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5522729A (en) * 1978-08-04 1980-02-18 Nippon Telegr & Teleph Corp <Ntt> Photo isolator
JPH01287528A (en) * 1988-05-13 1989-11-20 Tdk Corp Optical isolator and optical circulator
JPH0451214A (en) * 1990-06-20 1992-02-19 Shinkosha:Kk Optical isolator
FR2688071A1 (en) * 1992-02-17 1993-09-03 Chichibu Cement Kk OPTICAL ISOLATOR USED IN OPTICAL COMMUNICATIONS AND PHOTOMETRY.
US5446578A (en) * 1988-07-21 1995-08-29 Hewlett-Packard Company Polarization preserving optical isolator

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5522729A (en) * 1978-08-04 1980-02-18 Nippon Telegr & Teleph Corp <Ntt> Photo isolator
JPS5828561B2 (en) * 1978-08-04 1983-06-16 日本電信電話株式会社 optical isolator
JPH01287528A (en) * 1988-05-13 1989-11-20 Tdk Corp Optical isolator and optical circulator
JP2572627B2 (en) * 1988-05-13 1997-01-16 ティーディーケイ株式会社 Optical isolator and optical circulator
US5446578A (en) * 1988-07-21 1995-08-29 Hewlett-Packard Company Polarization preserving optical isolator
JPH0451214A (en) * 1990-06-20 1992-02-19 Shinkosha:Kk Optical isolator
FR2688071A1 (en) * 1992-02-17 1993-09-03 Chichibu Cement Kk OPTICAL ISOLATOR USED IN OPTICAL COMMUNICATIONS AND PHOTOMETRY.

Also Published As

Publication number Publication date
JPS6051690B2 (en) 1985-11-15

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