JPS6480914A - Optical coupler - Google Patents

Optical coupler

Info

Publication number
JPS6480914A
JPS6480914A JP23794087A JP23794087A JPS6480914A JP S6480914 A JPS6480914 A JP S6480914A JP 23794087 A JP23794087 A JP 23794087A JP 23794087 A JP23794087 A JP 23794087A JP S6480914 A JPS6480914 A JP S6480914A
Authority
JP
Japan
Prior art keywords
optical fiber
clad
loss
fiber
refractive index
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
JP23794087A
Other languages
Japanese (ja)
Inventor
Taisuke Murakami
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.)
Sumitomo Electric Industries Ltd
Original Assignee
Sumitomo Electric Industries 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 Sumitomo Electric Industries Ltd filed Critical Sumitomo Electric Industries Ltd
Priority to JP23794087A priority Critical patent/JPS6480914A/en
Publication of JPS6480914A publication Critical patent/JPS6480914A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To reduce the loss between fibers and the loss between a bus fiber and a coupling fiber at the same time by making the refractive index of the clad of a 1st optical fiber larger than the refractive index of the clad of a 2nd optical fiber. CONSTITUTION:The cores 4 and 6 of the two optical fibers 1 and 2 are equal to each other, but the refractive index of the clad 3 of the 1st optical fiber is larger than that of the clad 5 of the 2nd optical fiber. Therefore, the clad of the 1st optical fiber 1 operates as a confining layer for light and the passage loss of light in the 1st optical fiber 1 decreases. Further, the clad 3 of the 1st optical fiber 1 operates as an acquisition layer for light and the coupling loss from the 2nd optical fiber 2 to the 1st optical fiber 1 is reduced. Consequently, the loss between the bus fibers and the loss between the bus fiber and coupling fiber are both reduced at the same time.
JP23794087A 1987-09-22 1987-09-22 Optical coupler Pending JPS6480914A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP23794087A JPS6480914A (en) 1987-09-22 1987-09-22 Optical coupler

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP23794087A JPS6480914A (en) 1987-09-22 1987-09-22 Optical coupler

Publications (1)

Publication Number Publication Date
JPS6480914A true JPS6480914A (en) 1989-03-27

Family

ID=17022714

Family Applications (1)

Application Number Title Priority Date Filing Date
JP23794087A Pending JPS6480914A (en) 1987-09-22 1987-09-22 Optical coupler

Country Status (1)

Country Link
JP (1) JPS6480914A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010272827A (en) * 2009-05-25 2010-12-02 Fujikura Ltd Optical fiber coupler and optical fiber amplifier

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010272827A (en) * 2009-05-25 2010-12-02 Fujikura Ltd Optical fiber coupler and optical fiber amplifier
US8934167B2 (en) 2009-05-25 2015-01-13 Fujikura Ltd. Optical fiber coupler and optical fiber amplifier
US9425579B2 (en) 2009-05-25 2016-08-23 Fujikura Ltd. Optical fiber coupler and optical fiber amplifier

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