JPS5764708A - Optical filter - Google Patents

Optical filter

Info

Publication number
JPS5764708A
JPS5764708A JP14105580A JP14105580A JPS5764708A JP S5764708 A JPS5764708 A JP S5764708A JP 14105580 A JP14105580 A JP 14105580A JP 14105580 A JP14105580 A JP 14105580A JP S5764708 A JPS5764708 A JP S5764708A
Authority
JP
Japan
Prior art keywords
dielectric multilayer
multilayer filter
optical fiber
light
transmitting element
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
JP14105580A
Other languages
Japanese (ja)
Inventor
Takeshi Usui
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 JP14105580A priority Critical patent/JPS5764708A/en
Publication of JPS5764708A publication Critical patent/JPS5764708A/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
    • G02B6/264—Optical coupling means with optical elements between opposed fibre ends which perform a function other than beam splitting
    • G02B6/266—Optical coupling means with optical elements between opposed fibre ends which perform a function other than beam splitting the optical element being an attenuator

Abstract

PURPOSE:To increase the quantity of attenuation by attaching a dielectric multilayer filter between the one end of a forcusing light transmitting element and a rectangular prism reflector and make incident light transmit into the dielectric multilayer filter twice. CONSTITUTION:A dielectric multilayer filter 2 and a rectangular prism reflector 3 are attached to the one end 13 of a forcusing light transmitting element 1 with 1/4 pitch whose refractive index changes according to the square of the distance from the center axis and the tops of optical fibers 41 and 42 for input/output are arranged close to the other end 12. Almost all the light signals included in the transmission wavelength area of the light made incident from the optical fiber 41 into the focusing light transmitting element 1 passes through the dielectric multilayer filter 2 and is made incident to the optical fiber 42 after being transmitted through the same passage. The light signals included in the rejecting wavelength area are relfected by the dielectric multilayer filter 2 and projected from the position other than the optical fiber 42, so that these signals are not bonded to the optical fiber 42 in principle.
JP14105580A 1980-10-08 1980-10-08 Optical filter Pending JPS5764708A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14105580A JPS5764708A (en) 1980-10-08 1980-10-08 Optical filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14105580A JPS5764708A (en) 1980-10-08 1980-10-08 Optical filter

Publications (1)

Publication Number Publication Date
JPS5764708A true JPS5764708A (en) 1982-04-20

Family

ID=15283198

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14105580A Pending JPS5764708A (en) 1980-10-08 1980-10-08 Optical filter

Country Status (1)

Country Link
JP (1) JPS5764708A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2569017A1 (en) * 1984-08-08 1986-02-14 Sopelem Device for connecting optical fibres and associated adjustment system
US4749254A (en) * 1985-04-03 1988-06-07 Seaver George A Optical sensor system
EP0959375A2 (en) * 1998-05-21 1999-11-24 Jds Fitel Inc. Optical attenuator

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5454650A (en) * 1977-10-11 1979-05-01 Nippon Selfoc Co Ltd Wavelength variable filter for optical beam
JPS5456851A (en) * 1977-10-14 1979-05-08 Nippon Selfoc Co Ltd Optical filter

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5454650A (en) * 1977-10-11 1979-05-01 Nippon Selfoc Co Ltd Wavelength variable filter for optical beam
JPS5456851A (en) * 1977-10-14 1979-05-08 Nippon Selfoc Co Ltd Optical filter

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2569017A1 (en) * 1984-08-08 1986-02-14 Sopelem Device for connecting optical fibres and associated adjustment system
US4749254A (en) * 1985-04-03 1988-06-07 Seaver George A Optical sensor system
EP0959375A2 (en) * 1998-05-21 1999-11-24 Jds Fitel Inc. Optical attenuator
EP0959375A3 (en) * 1998-05-21 2002-12-04 Jds Fitel Inc. Optical attenuator

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