JPS54127340A - Light attenuator - Google Patents

Light attenuator

Info

Publication number
JPS54127340A
JPS54127340A JP3413878A JP3413878A JPS54127340A JP S54127340 A JPS54127340 A JP S54127340A JP 3413878 A JP3413878 A JP 3413878A JP 3413878 A JP3413878 A JP 3413878A JP S54127340 A JPS54127340 A JP S54127340A
Authority
JP
Japan
Prior art keywords
optical fiber
attenuator
lens
film
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
JP3413878A
Other languages
Japanese (ja)
Inventor
Junichiro Minowa
Tetsuya Miki
Shunsuke Nonaka
Shoichi Kurita
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
NEC Corp
Nippon Telegraph and Telephone Corp
Original Assignee
Fujitsu Ltd
NEC Corp
Nippon Telegraph and Telephone 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 Fujitsu Ltd, NEC Corp, Nippon Telegraph and Telephone Corp, Nippon Electric Co Ltd filed Critical Fujitsu Ltd
Priority to JP3413878A priority Critical patent/JPS54127340A/en
Publication of JPS54127340A publication Critical patent/JPS54127340A/en
Pending legal-status Critical Current

Links

Landscapes

  • Optical Filters (AREA)
  • Light Guides In General And Applications Therefor (AREA)
  • Optical Couplings Of Light Guides (AREA)

Abstract

PURPOSE: To make the light attenuator miniature, lightweight and robust by forming an attenuating film to an optical lens having a square refractive index distribution and incorporating the lens into the connector for optical fibers.
CONSTITUTION: An optical fiber F1 and an attenuating element M are secured to a male type connector P and an optical fiber F2 is secured to a female type connector J. The connectors P, J are then fitted together. The attenuating element M is constituted by depositing a vapor deposition film 6 of Cr, Ni, Ge, Si, etc. on the incident or exit face of light radiation or intermediate face of the square refractive index distribution lens L in which the length of the light propagation direction is 1/2 or integer times of 1/2 of one period length of rays. Here, the luminous flux from the optical fiber F1 is magnified and converged within the attenuator M and is coupled to the optical fiber F2 in the converged position. The specified attenuation is obtained with the film 6 and the luminous flux is led to the optical fiber F2 by passing through the attenuator M.
COPYRIGHT: (C)1979,JPO&Japio
JP3413878A 1978-03-27 1978-03-27 Light attenuator Pending JPS54127340A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3413878A JPS54127340A (en) 1978-03-27 1978-03-27 Light attenuator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3413878A JPS54127340A (en) 1978-03-27 1978-03-27 Light attenuator

Publications (1)

Publication Number Publication Date
JPS54127340A true JPS54127340A (en) 1979-10-03

Family

ID=12405849

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3413878A Pending JPS54127340A (en) 1978-03-27 1978-03-27 Light attenuator

Country Status (1)

Country Link
JP (1) JPS54127340A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6410704U (en) * 1987-07-09 1989-01-20
JPH02167507A (en) * 1988-09-08 1990-06-27 Furukawa Electric Co Ltd:The Filter-containing optical connector and production thereof
WO2023276026A1 (en) * 2021-06-30 2023-01-05 ナルックス株式会社 Optical element provided with attenuation region, and manufacturing method thereof

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5133565U (en) * 1974-09-02 1976-03-12
JPS5185729A (en) * 1975-01-25 1976-07-27 Fujitsu Ltd

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5133565U (en) * 1974-09-02 1976-03-12
JPS5185729A (en) * 1975-01-25 1976-07-27 Fujitsu Ltd

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6410704U (en) * 1987-07-09 1989-01-20
JPH02167507A (en) * 1988-09-08 1990-06-27 Furukawa Electric Co Ltd:The Filter-containing optical connector and production thereof
WO2023276026A1 (en) * 2021-06-30 2023-01-05 ナルックス株式会社 Optical element provided with attenuation region, and manufacturing method thereof

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