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JPS52127086A - Uni-directional dfb laser - Google Patents

Uni-directional dfb laser

Info

Publication number
JPS52127086A
JPS52127086A JP4307476A JP4307476A JPS52127086A JP S52127086 A JPS52127086 A JP S52127086A JP 4307476 A JP4307476 A JP 4307476A JP 4307476 A JP4307476 A JP 4307476A JP S52127086 A JPS52127086 A JP S52127086A
Authority
JP
Japan
Prior art keywords
uni
directional
dfb laser
emission output
unidirectionality
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
JP4307476A
Other languages
Japanese (ja)
Other versions
JPS5346711B2 (en
Inventor
Tadahisa 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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone Corp
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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP4307476A priority Critical patent/JPS52127086A/en
Publication of JPS52127086A publication Critical patent/JPS52127086A/en
Publication of JPS5346711B2 publication Critical patent/JPS5346711B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S5/00—Semiconductor lasers
    • H01S5/10—Construction or shape of the optical resonator, e.g. extended or external cavity, coupled cavities, bent-guide, varying width, thickness or composition of the active region
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S5/00—Semiconductor lasers
    • H01S5/10—Construction or shape of the optical resonator, e.g. extended or external cavity, coupled cavities, bent-guide, varying width, thickness or composition of the active region
    • H01S5/1053—Comprising an active region having a varying composition or cross-section in a specific direction
    • H01S5/106—Comprising an active region having a varying composition or cross-section in a specific direction varying thickness along the optical axis

Landscapes

  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Optics & Photonics (AREA)
  • Semiconductor Lasers (AREA)

Abstract

PURPOSE:To effectively utilize the light emission output by realizing single mode oscillation and adapting the emission output to have unidirectionality.
JP4307476A 1976-04-17 1976-04-17 Uni-directional dfb laser Granted JPS52127086A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4307476A JPS52127086A (en) 1976-04-17 1976-04-17 Uni-directional dfb laser

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4307476A JPS52127086A (en) 1976-04-17 1976-04-17 Uni-directional dfb laser

Publications (2)

Publication Number Publication Date
JPS52127086A true JPS52127086A (en) 1977-10-25
JPS5346711B2 JPS5346711B2 (en) 1978-12-15

Family

ID=12653690

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4307476A Granted JPS52127086A (en) 1976-04-17 1976-04-17 Uni-directional dfb laser

Country Status (1)

Country Link
JP (1) JPS52127086A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62245690A (en) * 1986-04-18 1987-10-26 Nippon Telegr & Teleph Corp <Ntt> Semiconductor laser device
JPH01115188A (en) * 1987-10-28 1989-05-08 Fuji Photo Film Co Ltd Optical semiconductor device

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5812933Y2 (en) * 1978-10-23 1983-03-12 三井造船株式会社 Buckhou's Bucket
JPS59125562U (en) * 1983-02-07 1984-08-23 新キャタピラ−三菱株式会社 Buckhoe bucket device
JPS60165547U (en) * 1984-04-12 1985-11-02 油谷重工株式会社 Bucket

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62245690A (en) * 1986-04-18 1987-10-26 Nippon Telegr & Teleph Corp <Ntt> Semiconductor laser device
JPH01115188A (en) * 1987-10-28 1989-05-08 Fuji Photo Film Co Ltd Optical semiconductor device

Also Published As

Publication number Publication date
JPS5346711B2 (en) 1978-12-15

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