JPS5451391A - Photo coupler - Google Patents

Photo coupler

Info

Publication number
JPS5451391A
JPS5451391A JP11659777A JP11659777A JPS5451391A JP S5451391 A JPS5451391 A JP S5451391A JP 11659777 A JP11659777 A JP 11659777A JP 11659777 A JP11659777 A JP 11659777A JP S5451391 A JPS5451391 A JP S5451391A
Authority
JP
Japan
Prior art keywords
optical fiber
taper
fiber
taper part
inclination
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
JP11659777A
Other languages
Japanese (ja)
Inventor
Yutaka Uematsu
Yoichi Unno
Takeshi Koseki
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP11659777A priority Critical patent/JPS5451391A/en
Publication of JPS5451391A publication Critical patent/JPS5451391A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To increase coupling efficiency by so constituting the coupler that the angle of inclination of the taper part of the optical fiber having the taper part is above 0.3 deg. and below 2 deg.. CONSTITUTION:A fiber having a taper part of high equivalent numerical aperture, e.g., NA=0.26, for example, an optical fiber comprising tapering the end 6 of an optical fiber 5 is disposed on the light emitting element 4 side, and an optical fiber 7 for signal transmission of lower NA than the numerical aperture NA of said optical fiber, e.g., Na=0.18 is coupled in the position of a certain length l1. Coupling of the light emitting element 4 and the fiber 5 is determined by a taper ratio R. Here, the angle of inclination of the taper above 0.3 deg. is enough and below 1 deg. is optimum but may be 2 deg. or under.
JP11659777A 1977-09-30 1977-09-30 Photo coupler Pending JPS5451391A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11659777A JPS5451391A (en) 1977-09-30 1977-09-30 Photo coupler

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11659777A JPS5451391A (en) 1977-09-30 1977-09-30 Photo coupler

Publications (1)

Publication Number Publication Date
JPS5451391A true JPS5451391A (en) 1979-04-23

Family

ID=14691076

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11659777A Pending JPS5451391A (en) 1977-09-30 1977-09-30 Photo coupler

Country Status (1)

Country Link
JP (1) JPS5451391A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55153384A (en) * 1979-05-19 1980-11-29 Nippon Telegr & Teleph Corp <Ntt> Semiconductor laser connector for single mode optical fiber
JPS6241103U (en) * 1985-08-29 1987-03-12
EP0790685A1 (en) * 1996-02-16 1997-08-20 Lucent Technologies Inc. Semiconductor laser with low beam divergence

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55153384A (en) * 1979-05-19 1980-11-29 Nippon Telegr & Teleph Corp <Ntt> Semiconductor laser connector for single mode optical fiber
JPS5732517B2 (en) * 1979-05-19 1982-07-12
JPS6241103U (en) * 1985-08-29 1987-03-12
EP0790685A1 (en) * 1996-02-16 1997-08-20 Lucent Technologies Inc. Semiconductor laser with low beam divergence
US5815521A (en) * 1996-02-16 1998-09-29 Lucent Technologies Inc. Semiconductor laser with low beam divergence

Similar Documents

Publication Publication Date Title
DE2963693D1 (en) Optical connector for connecting a light source with at least one optical transmission line having a cross-section small with respect to the aperture of the light beam issuing from said source
JPS5360651A (en) Semiconductor laser with optical fibers
JPS6465506A (en) Optical attenuator
JPS5535369A (en) Coupling device of semiconductor laser and optical fiber
JPS5451391A (en) Photo coupler
JPS56165363A (en) Optical connector
JPS5569115A (en) Optical coupling device
JPS5384738A (en) Connecting method of optical fibers
GB8708034D0 (en) Optical fibre device fabrication
JPS57158604A (en) Light beam converting adaptor
JPS5727214A (en) Graded lens and optical transmission line using said lens
JPS57172309A (en) Coupling method of optical fiber and optical waveguide
JPS566203A (en) Photoswitch
JPS57157207A (en) Optical distribution coupler
JPS5533128A (en) Photo switch
JPS57211288A (en) Coupler for semiconductor laser and optical fiber
JPS5730811A (en) Optical fiber coupler
JPS5726807A (en) Optical fiber core comparator
JPS57150814A (en) Optical distributing circuit
JPS57211289A (en) Semicondutor laser coupler for single mode optical fiber
JPS5746218A (en) Optical fiber connecting part having directional property
JPS5419687A (en) Semiconductor light emitting device
JPS57169713A (en) Optical connector
JPS57186856A (en) Single line bi-direction optical transmitting device
JPS52104136A (en) Coupling device to joint electric-photo converter to optical fiber

Legal Events

Date Code Title Description
A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20060110

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20060308

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20060606

A521 Written amendment

Effective date: 20060804

Free format text: JAPANESE INTERMEDIATE CODE: A523

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20061024