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JPS6480880A - Measuring instrument for semiconductor laser element - Google Patents

Measuring instrument for semiconductor laser element

Info

Publication number
JPS6480880A
JPS6480880A JP23932087A JP23932087A JPS6480880A JP S6480880 A JPS6480880 A JP S6480880A JP 23932087 A JP23932087 A JP 23932087A JP 23932087 A JP23932087 A JP 23932087A JP S6480880 A JPS6480880 A JP S6480880A
Authority
JP
Japan
Prior art keywords
semiconductor laser
laser element
output
bias current
step pulse
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
JP23932087A
Other languages
Japanese (ja)
Inventor
Hidehiko Negishi
Shinichi Wakabayashi
Masao Kasahara
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP23932087A priority Critical patent/JPS6480880A/en
Publication of JPS6480880A publication Critical patent/JPS6480880A/en
Pending legal-status Critical Current

Links

Landscapes

  • Testing Of Individual Semiconductor Devices (AREA)

Abstract

PURPOSE:To measure and evaluate the oscillation characteristics of a semiconductor laser element fast with high accuracy by using a step pulse bias current as a current applied to the semiconductor laser element. CONSTITUTION:A pulse generator 306 applies the step pulse bias current to a semiconductor laser array and emitted light is photodetected by a photodetection part 302 and inputted to a signal control part 303. Its output is converted by a following A/D conversion part 304 into a digital signal, which is processed by a signal processing part 305. Further, the output of the pulse generator 306 and the output of the signal control part 305 are connected to a measurement part 301. Further, a light output value Ln and a light output increase quantity dL or the like corresponding to the step pulse bias current value In and a current increase quantity dI are measured and stored, and also processed to measure the oscillation characteristics of the semiconductor laser element fast with high accuracy.
JP23932087A 1987-09-24 1987-09-24 Measuring instrument for semiconductor laser element Pending JPS6480880A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP23932087A JPS6480880A (en) 1987-09-24 1987-09-24 Measuring instrument for semiconductor laser element

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP23932087A JPS6480880A (en) 1987-09-24 1987-09-24 Measuring instrument for semiconductor laser element

Publications (1)

Publication Number Publication Date
JPS6480880A true JPS6480880A (en) 1989-03-27

Family

ID=17042961

Family Applications (1)

Application Number Title Priority Date Filing Date
JP23932087A Pending JPS6480880A (en) 1987-09-24 1987-09-24 Measuring instrument for semiconductor laser element

Country Status (1)

Country Link
JP (1) JPS6480880A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004061493A3 (en) * 2002-12-16 2004-09-10 Intel Corp Laser driver circuit and system

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004061493A3 (en) * 2002-12-16 2004-09-10 Intel Corp Laser driver circuit and system
US6928094B2 (en) 2002-12-16 2005-08-09 Intel Corporation Laser driver circuit and system
CN100365885C (en) * 2002-12-16 2008-01-30 英特尔公司 Laser driver circuit and system
CN101222119A (en) * 2002-12-16 2008-07-16 英特尔公司 Laser driver circuit and system
US7519093B2 (en) 2002-12-16 2009-04-14 Intel Corporation Laser driver circuit and system

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