JPS55110207A - Optical fiber device - Google Patents

Optical fiber device

Info

Publication number
JPS55110207A
JPS55110207A JP1805679A JP1805679A JPS55110207A JP S55110207 A JPS55110207 A JP S55110207A JP 1805679 A JP1805679 A JP 1805679A JP 1805679 A JP1805679 A JP 1805679A JP S55110207 A JPS55110207 A JP S55110207A
Authority
JP
Grant status
Application
Patent type
Prior art keywords
optical fiber
photosensitive material
portion
optical filter
formula
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
JP1805679A
Inventor
Jiro Koyama
Hiroshi Nishihara
Hideo Segawa
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

Links

Abstract

PURPOSE:To achieve the higher efficiency of optical filter action by directly forming periodic gratings to the optical fiber portion thereby providing the function of an optical filter to the optical fiber itself. CONSTITUTION:The clad 6 portion of an optical fiber 5 is removed for a suitable length to exposure the core part 7, and photosensitive material 8 whose refractive index changes when exposed, e.g., photopolymer or amorphous semiconductor, is packed in this exposed portion. Further, parallel beams B1, B2 of Ar laser or the like showing sensitivity to the photosensitive material 8 are radiated simultaneously at an angle 2theta0 with each other. Thereby, the grating images 9 of period LAMBDA shown in formula 1 appear in the photosensitive material 8 along the axis of the fiber 5. Hence, if a light signal is sent to the optical fiber 5, only the light waves of the wavelength lambda shown by formula 2 are selectively reflected and the light waves of the other wavelengths transmit therethrough. In this way, the performance of optical filter action may be improved.
JP1805679A 1979-02-19 1979-02-19 Optical fiber device Pending JPS55110207A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1805679A JPS55110207A (en) 1979-02-19 1979-02-19 Optical fiber device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1805679A JPS55110207A (en) 1979-02-19 1979-02-19 Optical fiber device

Publications (1)

Publication Number Publication Date
JPS55110207A true true JPS55110207A (en) 1980-08-25

Family

ID=11961030

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1805679A Pending JPS55110207A (en) 1979-02-19 1979-02-19 Optical fiber device

Country Status (1)

Country Link
JP (1) JPS55110207A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1982004329A1 (en) * 1981-05-26 1982-12-09 Inc Gould Optical fiber apparatus including substrate ruggedized optical fibers
US4400056A (en) * 1980-07-09 1983-08-23 Her Majesty The Queen As Represented By The Minister Of National Defence Of Her Majesty's Canadian Government Evanescent-wave fiber reflector
WO1986001303A1 (en) * 1984-08-13 1986-02-27 United Technologies Corporation Method for impressing grating within fiber optics
US4593969A (en) * 1983-10-28 1986-06-10 Chevron Research Company Ruggedized grated optical fiber
US4636031A (en) * 1983-10-28 1987-01-13 Chevron Research Company Process of tuning a grated optical fiber and the tuned optical fiber
US4761073A (en) * 1984-08-13 1988-08-02 United Technologies Corporation Distributed, spatially resolving optical fiber strain gauge
WO1997026571A3 (en) * 1996-01-18 1998-08-27 British Telecomm Optical waveguide with photosensitive refractive index cladding
US5830622A (en) * 1994-02-14 1998-11-03 The University Of Sydney Optical grating
US6449400B1 (en) 1996-06-21 2002-09-10 Kabushiki Gaisha Inter Action Sensing optical fiber and sensor system

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5115450A (en) * 1974-07-29 1976-02-06 Ritsuo Hasumi Hikaridensofuaibaano hanshafuiruta
JPS5248334A (en) * 1975-10-15 1977-04-18 Nippon Telegr & Teleph Corp <Ntt> Band-pass filter

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5115450A (en) * 1974-07-29 1976-02-06 Ritsuo Hasumi Hikaridensofuaibaano hanshafuiruta
JPS5248334A (en) * 1975-10-15 1977-04-18 Nippon Telegr & Teleph Corp <Ntt> Band-pass filter

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4400056A (en) * 1980-07-09 1983-08-23 Her Majesty The Queen As Represented By The Minister Of National Defence Of Her Majesty's Canadian Government Evanescent-wave fiber reflector
JPS58500818A (en) * 1981-05-26 1983-05-19
US4444460A (en) * 1981-05-26 1984-04-24 Gould Inc. Optical fiber apparatus including subtstrate ruggedized optical fibers
WO1982004329A1 (en) * 1981-05-26 1982-12-09 Inc Gould Optical fiber apparatus including substrate ruggedized optical fibers
US4593969A (en) * 1983-10-28 1986-06-10 Chevron Research Company Ruggedized grated optical fiber
US4636031A (en) * 1983-10-28 1987-01-13 Chevron Research Company Process of tuning a grated optical fiber and the tuned optical fiber
JPS62500052A (en) * 1984-08-13 1987-01-08
WO1986001303A1 (en) * 1984-08-13 1986-02-27 United Technologies Corporation Method for impressing grating within fiber optics
US4761073A (en) * 1984-08-13 1988-08-02 United Technologies Corporation Distributed, spatially resolving optical fiber strain gauge
US4807950A (en) * 1984-08-13 1989-02-28 United Technologies Corporation Method for impressing gratings within fiber optics
US5830622A (en) * 1994-02-14 1998-11-03 The University Of Sydney Optical grating
WO1997026571A3 (en) * 1996-01-18 1998-08-27 British Telecomm Optical waveguide with photosensitive refractive index cladding
US6104852A (en) * 1996-01-18 2000-08-15 British Telecommunications Public Limited Company Optical waveguide with photosensitive refractive index cladding
US6449400B1 (en) 1996-06-21 2002-09-10 Kabushiki Gaisha Inter Action Sensing optical fiber and sensor system

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