JPS57125909A - Optical distributing circuit - Google Patents

Optical distributing circuit

Info

Publication number
JPS57125909A
JPS57125909A JP56012513A JP1251381A JPS57125909A JP S57125909 A JPS57125909 A JP S57125909A JP 56012513 A JP56012513 A JP 56012513A JP 1251381 A JP1251381 A JP 1251381A JP S57125909 A JPS57125909 A JP S57125909A
Authority
JP
Japan
Prior art keywords
optical
glass layer
distributing circuit
fibers
optical fibers
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
JP56012513A
Other languages
Japanese (ja)
Inventor
Kazuhisa Kaede
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 JP56012513A priority Critical patent/JPS57125909A/en
Publication of JPS57125909A publication Critical patent/JPS57125909A/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
    • G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
    • G02B6/2804—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals forming multipart couplers without wavelength selective elements, e.g. "T" couplers, star couplers
    • G02B6/2808—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals forming multipart couplers without wavelength selective elements, e.g. "T" couplers, star couplers using a mixing element which evenly distributes an input signal over a number of outputs

Abstract

PURPOSE:To obtain an optical distributing circuit of low losses, a small size and easy connection of optical fibers by forming a glass layer on a substrate except its both ends in such a way that the recesses of a V-groove provided to the central part thereof and the plural V-grooves provided at both ends parts are nearly buried, increasing the refractive index of the glass layer and forming optical waveguides. CONSTITUTION:A glass layer 207 is formed on a substrate 201 of Si except its both ends in such a way that a V-groove 202 provided to the central part thereof and plural V-grooves 203-206, 203'-206' having tapers in the longitudinal direction provided at both ends are nearly buried. The refractive index thereof is increased by diffusing Tl<+> ions into the glass layer 207, whereby optical waveguides 209-212, 209'-212', 208 are formed. The light made incident from an optical fiber 213 to an inlet end 209 propagates to a mixing part 208, spreads spacially and is coupled to optical fibers 213'-216'. The same holds true of other fibers 214-216. Thereby, the optical distributing circuit of less fraction losses, a small size and easy connection of the optical fibers is obtained.
JP56012513A 1981-01-30 1981-01-30 Optical distributing circuit Pending JPS57125909A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56012513A JPS57125909A (en) 1981-01-30 1981-01-30 Optical distributing circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56012513A JPS57125909A (en) 1981-01-30 1981-01-30 Optical distributing circuit

Publications (1)

Publication Number Publication Date
JPS57125909A true JPS57125909A (en) 1982-08-05

Family

ID=11807422

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56012513A Pending JPS57125909A (en) 1981-01-30 1981-01-30 Optical distributing circuit

Country Status (1)

Country Link
JP (1) JPS57125909A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59159122A (en) * 1983-03-01 1984-09-08 Nippon Sheet Glass Co Ltd Mixing/branching circuit of light
JPS6090312A (en) * 1983-07-08 1985-05-21 インタ−ナシヨナル・スタンダ−ド・エレクトリツク・コ−ポレイシヨン Optical coupler and manufacture thereof
JPS61169802A (en) * 1985-01-23 1986-07-31 Nippon Sheet Glass Co Ltd Start coupler

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5256531Y2 (en) * 1973-07-18 1977-12-21
JPS55122083U (en) * 1979-02-22 1980-08-29

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5256531Y2 (en) * 1973-07-18 1977-12-21
JPS55122083U (en) * 1979-02-22 1980-08-29

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59159122A (en) * 1983-03-01 1984-09-08 Nippon Sheet Glass Co Ltd Mixing/branching circuit of light
JPS6090312A (en) * 1983-07-08 1985-05-21 インタ−ナシヨナル・スタンダ−ド・エレクトリツク・コ−ポレイシヨン Optical coupler and manufacture thereof
JPS61169802A (en) * 1985-01-23 1986-07-31 Nippon Sheet Glass Co Ltd Start coupler

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