JPS57190909A - Waveguide element and its manufacture - Google Patents

Waveguide element and its manufacture

Info

Publication number
JPS57190909A
JPS57190909A JP7484081A JP7484081A JPS57190909A JP S57190909 A JPS57190909 A JP S57190909A JP 7484081 A JP7484081 A JP 7484081A JP 7484081 A JP7484081 A JP 7484081A JP S57190909 A JPS57190909 A JP S57190909A
Authority
JP
Japan
Prior art keywords
substrate
linbo3
refractive index
region
lower refractive
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
JP7484081A
Other languages
Japanese (ja)
Inventor
Mamoru Kanazawa
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP7484081A priority Critical patent/JPS57190909A/en
Publication of JPS57190909A publication Critical patent/JPS57190909A/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
    • G02B6/10—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
    • G02B6/12—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind
    • G02B6/13—Integrated optical circuits characterised by the manufacturing method
    • G02B6/134—Integrated optical circuits characterised by the manufacturing method by substitution by dopant atoms

Abstract

PURPOSE:To obtain a waveguide element capable of forming a Bragg cell with small loss, high efficiency and high resolution by coating the surface of a substrate with a thin film having the same composition as the substrate with a region having a lower refractive index in-between. CONSTITUTION:By diffusing Li or Mg ions or implanting boron ions, H<+>, Ar<+> or Ne<+> into a part of a substrate 1 of LiNbO3 or the like close to the surface, a region 2 having a lower refractive index than the substrate is formed. On the region 2 an LiNbO3 crystal layer 3 having the same composition as the substate is grown as an optical waveguide. Since the LiNbO3 single crystal film is laid on the LiNbO3 substrate with the LiNbO3 layer having a lower refractive index in-between, there is no difference in grating constant and coefft. of asymmetric expansion, and a waveguide with small loss can be obtd. stably.
JP7484081A 1981-05-20 1981-05-20 Waveguide element and its manufacture Pending JPS57190909A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7484081A JPS57190909A (en) 1981-05-20 1981-05-20 Waveguide element and its manufacture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7484081A JPS57190909A (en) 1981-05-20 1981-05-20 Waveguide element and its manufacture

Publications (1)

Publication Number Publication Date
JPS57190909A true JPS57190909A (en) 1982-11-24

Family

ID=13558925

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7484081A Pending JPS57190909A (en) 1981-05-20 1981-05-20 Waveguide element and its manufacture

Country Status (1)

Country Link
JP (1) JPS57190909A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04191711A (en) * 1990-11-27 1992-07-10 Japan Steel Works Ltd:The Optical wave guide passage

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04191711A (en) * 1990-11-27 1992-07-10 Japan Steel Works Ltd:The Optical wave guide passage

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