JPS5723903A - Optical directional coupler - Google Patents

Optical directional coupler

Info

Publication number
JPS5723903A
JPS5723903A JP9840480A JP9840480A JPS5723903A JP S5723903 A JPS5723903 A JP S5723903A JP 9840480 A JP9840480 A JP 9840480A JP 9840480 A JP9840480 A JP 9840480A JP S5723903 A JPS5723903 A JP S5723903A
Authority
JP
Japan
Prior art keywords
optical fiber
directional coupler
input
output
side optical
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
JP9840480A
Other languages
Japanese (ja)
Inventor
Hideki Noda
Kazuyuki Asanuma
Seiji Terai
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP9840480A priority Critical patent/JPS5723903A/en
Publication of JPS5723903A publication Critical patent/JPS5723903A/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
    • G02B6/2852—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 tapping light guides arranged sidewardly, e.g. in a non-parallel relationship with respect to the bus light guides (light extraction or launching through cladding, with or without surface discontinuities, bent structures)
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Integrated Circuits (AREA)

Abstract

PURPOSE:To obtain a low-loss, inexpensive and small-sized optical directional coupler which has excellent reproducibility by forming the tip of each optical fiber in an input optical fiber group and an output optical fiber group in a circular cone shape, and by coupling both the groups while the tips are facing mutually. CONSTITUTION:Tip parts 11a and 12a, and 13a and 14a of input-side optical fibers 11 and 12, and output-side optical fibers 13 and 14 are made circularly conic by chemical etching, etc,; and exposed core parts 11c and 12c, and 13c and 14c are faced to each other and coupled adjacently, and the coupling part is covered with glycerol having refractivity similar to those of the core parts 11c-14c. For example, signal light traveling in the input-side optical fiber 11 reaches the output-side optical fibers 13 and 14. Consequently, a low-loss, inexpensive and small-sized optical directional coupler which has excellent reproducibility is obtained.
JP9840480A 1980-07-18 1980-07-18 Optical directional coupler Pending JPS5723903A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9840480A JPS5723903A (en) 1980-07-18 1980-07-18 Optical directional coupler

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9840480A JPS5723903A (en) 1980-07-18 1980-07-18 Optical directional coupler

Publications (1)

Publication Number Publication Date
JPS5723903A true JPS5723903A (en) 1982-02-08

Family

ID=14218890

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9840480A Pending JPS5723903A (en) 1980-07-18 1980-07-18 Optical directional coupler

Country Status (1)

Country Link
JP (1) JPS5723903A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62161106A (en) * 1986-01-10 1987-07-17 Hitachi Ltd Optical distributor
US10005130B2 (en) 2013-11-29 2018-06-26 Murata Machinery, Ltd. Machine tool and cutting method

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5374442A (en) * 1976-12-15 1978-07-01 Toshiba Corp Optical branching device
JPS54121751A (en) * 1978-03-14 1979-09-21 Showa Electric Wire & Cable Co Method of distributing optical signal

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5374442A (en) * 1976-12-15 1978-07-01 Toshiba Corp Optical branching device
JPS54121751A (en) * 1978-03-14 1979-09-21 Showa Electric Wire & Cable Co Method of distributing optical signal

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62161106A (en) * 1986-01-10 1987-07-17 Hitachi Ltd Optical distributor
US10005130B2 (en) 2013-11-29 2018-06-26 Murata Machinery, Ltd. Machine tool and cutting method

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