JPS55161203A - Photocoupling device - Google Patents

Photocoupling device

Info

Publication number
JPS55161203A
JPS55161203A JP6819379A JP6819379A JPS55161203A JP S55161203 A JPS55161203 A JP S55161203A JP 6819379 A JP6819379 A JP 6819379A JP 6819379 A JP6819379 A JP 6819379A JP S55161203 A JPS55161203 A JP S55161203A
Authority
JP
Japan
Prior art keywords
photocoupling
light
photsensitive
refractive index
thin film
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
JP6819379A
Other languages
Japanese (ja)
Inventor
Hideo Segawa
Jiro Koyama
Hiroshi Nishihara
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.)
Ricoh Co Ltd
Original Assignee
Ricoh 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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP6819379A priority Critical patent/JPS55161203A/en
Publication of JPS55161203A publication Critical patent/JPS55161203A/en
Pending legal-status Critical Current

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  • Optical Integrated Circuits (AREA)

Abstract

PURPOSE:To arbitrary adjust the phase constant between optical guides by providing a photsensitive thin film on one optical guide in the photocoupling part of the photocoupling device or in proximity thereto and forming the grating image which periodically changes the refractive index of light. CONSTITUTION:A photosensitive film 4 is provided on one optical guide 3 in the coupling place L or in extreme proximity thereto as shown in the figure. The control light from the outside is radiated to this photsensitive thin film 4 to expose the grating image corresponding to the control light to this. Arrangement is so made that the refractive index of light at this portion is periodically changed. These enable the arbitrary adjustment of the phase matching conditions between the optical guides 2 and 3 and the enhancement of the photocoupling efficiency.
JP6819379A 1979-05-31 1979-05-31 Photocoupling device Pending JPS55161203A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6819379A JPS55161203A (en) 1979-05-31 1979-05-31 Photocoupling device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6819379A JPS55161203A (en) 1979-05-31 1979-05-31 Photocoupling device

Publications (1)

Publication Number Publication Date
JPS55161203A true JPS55161203A (en) 1980-12-15

Family

ID=13366696

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6819379A Pending JPS55161203A (en) 1979-05-31 1979-05-31 Photocoupling device

Country Status (1)

Country Link
JP (1) JPS55161203A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63223712A (en) * 1987-03-13 1988-09-19 Hitachi Ltd Light guide and its production
US6226428B1 (en) 1997-07-30 2001-05-01 Nec Corporation Optical multiplexer/demultiplexer with optical waveguides and a diffraction grating
WO2002088838A2 (en) * 2001-04-30 2002-11-07 Raytheon Company Apparatus for separating and/or combining optical signals, and methods of making and operating it

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5421360A (en) * 1977-07-18 1979-02-17 Mitsubishi Electric Corp Photo directional coupler

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5421360A (en) * 1977-07-18 1979-02-17 Mitsubishi Electric Corp Photo directional coupler

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63223712A (en) * 1987-03-13 1988-09-19 Hitachi Ltd Light guide and its production
US6226428B1 (en) 1997-07-30 2001-05-01 Nec Corporation Optical multiplexer/demultiplexer with optical waveguides and a diffraction grating
WO2002088838A2 (en) * 2001-04-30 2002-11-07 Raytheon Company Apparatus for separating and/or combining optical signals, and methods of making and operating it
WO2002088838A3 (en) * 2001-04-30 2003-12-31 Raytheon Co Apparatus for separating and/or combining optical signals, and methods of making and operating it
KR100737048B1 (en) * 2001-04-30 2007-07-09 레이던 컴퍼니 Apparatus for separating and/or combining optical signals, and methods of making and operating it

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