JPS54110858A - Optical guide type wavelength filter - Google Patents

Optical guide type wavelength filter

Info

Publication number
JPS54110858A
JPS54110858A JP1761378A JP1761378A JPS54110858A JP S54110858 A JPS54110858 A JP S54110858A JP 1761378 A JP1761378 A JP 1761378A JP 1761378 A JP1761378 A JP 1761378A JP S54110858 A JPS54110858 A JP S54110858A
Authority
JP
Japan
Prior art keywords
waveguide
filter
layer
wavelength
band
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
JP1761378A
Other languages
Japanese (ja)
Other versions
JPS5758642B2 (en
Inventor
Moritake Kobayashi
Hiroshi Terui
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone 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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP1761378A priority Critical patent/JPS54110858A/en
Publication of JPS54110858A publication Critical patent/JPS54110858A/en
Publication of JPS5758642B2 publication Critical patent/JPS5758642B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Optical Integrated Circuits (AREA)
  • Optical Filters (AREA)

Abstract

PURPOSE:To obtain an arbitrary bandwidth easily, by laminating a waveguide having a large propagation loss on one waveguide. CONSTITUTION:Laminating a substrate 4, a waveghuide 5, a middle clad 6, a waveguide layer for filter 7, and an upper clad layer 8 having refractive index of ns, ng, nf, na and film thickness of Wg, Wc, Wf, a first waveguide is constituted with the substrate 4, waveguide layer 5, and middle clad layer 6, and a second waveguide is constituted with the middle clad layer 6, waveguide layer for filter 7 and air layer 8. Thus, the propagation constants of the two waveguides may be adjusted by changing the film thicknesses Wg, Wf of the waveguide layer 5 and waveguide layer for filter 7. And by constituting so that the propagation loss of the waveguide layer for filter 7 may be larger, the propagated light of the wavelength coupled may be damped and eliminated, and by controlling the film thickness forms of waveguide layers 5, 7, a wavelength filter to eliminate a specified wavelength, a band removal wavelength filter to eliminate an arbitray wavelength band, or a band pass wavelength filter to pass an arbitrary wavelength band may be formed.
JP1761378A 1978-02-20 1978-02-20 Optical guide type wavelength filter Granted JPS54110858A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1761378A JPS54110858A (en) 1978-02-20 1978-02-20 Optical guide type wavelength filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1761378A JPS54110858A (en) 1978-02-20 1978-02-20 Optical guide type wavelength filter

Publications (2)

Publication Number Publication Date
JPS54110858A true JPS54110858A (en) 1979-08-30
JPS5758642B2 JPS5758642B2 (en) 1982-12-10

Family

ID=11948722

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1761378A Granted JPS54110858A (en) 1978-02-20 1978-02-20 Optical guide type wavelength filter

Country Status (1)

Country Link
JP (1) JPS54110858A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4342499A (en) * 1979-03-19 1982-08-03 Hicks Jr John W Communications tuning construction
US4461535A (en) * 1981-10-21 1984-07-24 Bell Telephone Laboratories, Incorporated Wavelength filters
JPS62121408A (en) * 1985-11-22 1987-06-02 Hitachi Ltd Module for optical wavelength multiplex transmission

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5930461U (en) * 1982-08-20 1984-02-25 泉株式会社 Architectural construction sheet
JPS6077656U (en) * 1983-11-02 1985-05-30 トヨネン株式会社 Shatter prevention net

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3957341A (en) * 1974-09-03 1976-05-18 The United States Of America As Represented By The Secretary Of The Navy Passive frequency-selective optical coupler

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3957341A (en) * 1974-09-03 1976-05-18 The United States Of America As Represented By The Secretary Of The Navy Passive frequency-selective optical coupler

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4342499A (en) * 1979-03-19 1982-08-03 Hicks Jr John W Communications tuning construction
US4461535A (en) * 1981-10-21 1984-07-24 Bell Telephone Laboratories, Incorporated Wavelength filters
JPS62121408A (en) * 1985-11-22 1987-06-02 Hitachi Ltd Module for optical wavelength multiplex transmission

Also Published As

Publication number Publication date
JPS5758642B2 (en) 1982-12-10

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