JPS54161347A - Te0 mode optical filter - Google Patents

Te0 mode optical filter

Info

Publication number
JPS54161347A
JPS54161347A JP7025778A JP7025778A JPS54161347A JP S54161347 A JPS54161347 A JP S54161347A JP 7025778 A JP7025778 A JP 7025778A JP 7025778 A JP7025778 A JP 7025778A JP S54161347 A JPS54161347 A JP S54161347A
Authority
JP
Japan
Prior art keywords
film
refractive index
light
substrate
waveguide
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
JP7025778A
Other languages
Japanese (ja)
Other versions
JPS5737842B2 (en
Inventor
Hiroshi Terui
Morio Kobayashi
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 JP7025778A priority Critical patent/JPS54161347A/en
Publication of JPS54161347A publication Critical patent/JPS54161347A/en
Publication of JPS5737842B2 publication Critical patent/JPS5737842B2/ja
Granted legal-status Critical Current

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  • Optical Integrated Circuits (AREA)

Abstract

PURPOSE:To produce a filter easily and inexpensively, while ensuring the high accuracy, by forming a preset portion having a preset low refractive index on a waveguide film which is formed on a substrate and which has the minimum film thickness. CONSTITUTION:A substrate 11 of Vycor glass, which has a refractive index of n1 for the wavelength lambda of a wabeguide light 12, is formed with a waveguide film 2 of similar glass having a refractive index n2. The substrate 11 is used as a first cladding layer, and the air having a refractive index of n3=1.0, which exists on the film 2, is used as a second cladding layer. At this time, the minimum film thickness W1 of the film 2 (wherein n2>n1>n3) is determined by formula I so that the light 12 of TE0 and TM0 modes can be transmitted. When a preset portion 3 of the film 2 is heated by a laser beam so that the reduction DELTAn in the refractive index satisfies formula II, the waveguide light 13 of the TE0 mode transmits through the portion 3. The TM0 mode component of the light 12 is irradiated as an irradiation mode at the portion 3 to the outside of the film 2.
JP7025778A 1978-06-10 1978-06-10 Te0 mode optical filter Granted JPS54161347A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7025778A JPS54161347A (en) 1978-06-10 1978-06-10 Te0 mode optical filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7025778A JPS54161347A (en) 1978-06-10 1978-06-10 Te0 mode optical filter

Publications (2)

Publication Number Publication Date
JPS54161347A true JPS54161347A (en) 1979-12-20
JPS5737842B2 JPS5737842B2 (en) 1982-08-12

Family

ID=13426308

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7025778A Granted JPS54161347A (en) 1978-06-10 1978-06-10 Te0 mode optical filter

Country Status (1)

Country Link
JP (1) JPS54161347A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002341168A (en) * 2001-05-16 2002-11-27 Hoya Corp Optical waveguide element, method for manufacturing the same and method for forming distribution of refractive index

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5017850A (en) * 1973-06-15 1975-02-25

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5017850A (en) * 1973-06-15 1975-02-25

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002341168A (en) * 2001-05-16 2002-11-27 Hoya Corp Optical waveguide element, method for manufacturing the same and method for forming distribution of refractive index

Also Published As

Publication number Publication date
JPS5737842B2 (en) 1982-08-12

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