JPS5390801A - Semiconductor laser switching system - Google Patents

Semiconductor laser switching system

Info

Publication number
JPS5390801A
JPS5390801A JP492477A JP492477A JPS5390801A JP S5390801 A JPS5390801 A JP S5390801A JP 492477 A JP492477 A JP 492477A JP 492477 A JP492477 A JP 492477A JP S5390801 A JPS5390801 A JP S5390801A
Authority
JP
Japan
Prior art keywords
semiconductor laser
switching system
light output
laser switching
level
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
JP492477A
Other languages
Japanese (ja)
Other versions
JPS6028420B2 (en
Inventor
Kiichi Yamashita
Koichi Oota
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP52004924A priority Critical patent/JPS6028420B2/en
Publication of JPS5390801A publication Critical patent/JPS5390801A/en
Publication of JPS6028420B2 publication Critical patent/JPS6028420B2/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/03—Arrangements for fault recovery
    • H04B10/032—Arrangements for fault recovery using working and protection systems

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Optical Communication System (AREA)
  • Testing Of Optical Devices Or Fibers (AREA)
  • Semiconductor Lasers (AREA)

Abstract

PURPOSE:To enable an extremely high-speed current switching by monitoring the light output with the signal which had an individual comparison for the monitor output level of two units of the semiconductor laser light output and the normalized standard level of the light output.
JP52004924A 1977-01-21 1977-01-21 Semiconductor laser switching method Expired JPS6028420B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP52004924A JPS6028420B2 (en) 1977-01-21 1977-01-21 Semiconductor laser switching method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP52004924A JPS6028420B2 (en) 1977-01-21 1977-01-21 Semiconductor laser switching method

Publications (2)

Publication Number Publication Date
JPS5390801A true JPS5390801A (en) 1978-08-10
JPS6028420B2 JPS6028420B2 (en) 1985-07-04

Family

ID=11597146

Family Applications (1)

Application Number Title Priority Date Filing Date
JP52004924A Expired JPS6028420B2 (en) 1977-01-21 1977-01-21 Semiconductor laser switching method

Country Status (1)

Country Link
JP (1) JPS6028420B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5448415A (en) * 1977-09-26 1979-04-17 Nippon Telegr & Teleph Corp <Ntt> Optical relay unit
JPS56108276U (en) * 1980-01-22 1981-08-22
JPS57181247A (en) * 1981-04-20 1982-11-08 Western Electric Co Light source circuit

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0363027U (en) * 1989-10-16 1991-06-20

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5448415A (en) * 1977-09-26 1979-04-17 Nippon Telegr & Teleph Corp <Ntt> Optical relay unit
JPS56108276U (en) * 1980-01-22 1981-08-22
JPS57181247A (en) * 1981-04-20 1982-11-08 Western Electric Co Light source circuit

Also Published As

Publication number Publication date
JPS6028420B2 (en) 1985-07-04

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