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JPS5456850A - Optical branching circuit - Google Patents

Optical branching circuit

Info

Publication number
JPS5456850A
JPS5456850A JP12371777A JP12371777A JPS5456850A JP S5456850 A JPS5456850 A JP S5456850A JP 12371777 A JP12371777 A JP 12371777A JP 12371777 A JP12371777 A JP 12371777A JP S5456850 A JPS5456850 A JP S5456850A
Authority
JP
Japan
Prior art keywords
thru
optical
refractive index
optical transmission
transmission body
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
JP12371777A
Other languages
Japanese (ja)
Other versions
JPS6051088B2 (en
Inventor
Koichi Minemura
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 JP52123717A priority Critical patent/JPS6051088B2/en
Priority to US05/949,745 priority patent/US4285570A/en
Publication of JPS5456850A publication Critical patent/JPS5456850A/en
Publication of JPS6051088B2 publication Critical patent/JPS6051088B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Testing Of Optical Devices Or Fibers (AREA)
  • Optical Communication System (AREA)

Abstract

PURPOSE: To achieve lower light loss and easier assembling by using an optical transmission body having the specific refractive index distribution and length.
CONSTITUTION: Optical fibers 11 thru 18 are disposed parallel in proximity to both end faces 2, 3 of an optical transmission body 1 which has a refractive index distribution decreasing in proportion to the square of the distance from the optical axis face 4, both end faces 2, 3 perpendicular to the optical axis face 4 and a lingth about 1/2m pitch (m is a positive integer) times the pitch at which light propagates zigzag. This causes the light incident to the optical transmission body 1 from the optical fibers 11 thru 14 to become a slender beam and to enter the optical fiber 15 thru 18 at low loss. If refractive index matching liquid is put between the optical fibers 11 thru 14 and 15 thru 18 and the optical transmission boey 1, reflection loss will be decreased
COPYRIGHT: (C)1979,JPO&Japio
JP52123717A 1977-10-14 1977-10-14 optical distribution circuit Expired JPS6051088B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP52123717A JPS6051088B2 (en) 1977-10-14 1977-10-14 optical distribution circuit
US05/949,745 US4285570A (en) 1977-10-14 1978-10-10 Light branching device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP52123717A JPS6051088B2 (en) 1977-10-14 1977-10-14 optical distribution circuit

Publications (2)

Publication Number Publication Date
JPS5456850A true JPS5456850A (en) 1979-05-08
JPS6051088B2 JPS6051088B2 (en) 1985-11-12

Family

ID=14867610

Family Applications (1)

Application Number Title Priority Date Filing Date
JP52123717A Expired JPS6051088B2 (en) 1977-10-14 1977-10-14 optical distribution circuit

Country Status (1)

Country Link
JP (1) JPS6051088B2 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58209709A (en) * 1982-05-31 1983-12-06 Nippon Telegr & Teleph Corp <Ntt> Star coupler for multimode optical fiber and its manufacture
JPS59158121U (en) * 1983-04-08 1984-10-23 古河電気工業株式会社 optical splitter
JPS6175309A (en) * 1984-09-21 1986-04-17 Hoya Corp Optical demultiplexing and branching device
JPS628109A (en) * 1985-07-05 1987-01-16 Hoya Corp Slab type converging optical transmission body
JPS628110A (en) * 1985-07-05 1987-01-16 Hoya Corp Slab type converging optical transmission body
US4753508A (en) * 1982-05-14 1988-06-28 U.S. Philips Corp. Optical coupling device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6246449B1 (en) 1996-08-16 2001-06-12 Rosen Products Llc Display unit

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4753508A (en) * 1982-05-14 1988-06-28 U.S. Philips Corp. Optical coupling device
JPS58209709A (en) * 1982-05-31 1983-12-06 Nippon Telegr & Teleph Corp <Ntt> Star coupler for multimode optical fiber and its manufacture
JPS59158121U (en) * 1983-04-08 1984-10-23 古河電気工業株式会社 optical splitter
JPS6175309A (en) * 1984-09-21 1986-04-17 Hoya Corp Optical demultiplexing and branching device
JPS628109A (en) * 1985-07-05 1987-01-16 Hoya Corp Slab type converging optical transmission body
JPS628110A (en) * 1985-07-05 1987-01-16 Hoya Corp Slab type converging optical transmission body

Also Published As

Publication number Publication date
JPS6051088B2 (en) 1985-11-12

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