JPS5390889A - Dfb laser - Google Patents

Dfb laser

Info

Publication number
JPS5390889A
JPS5390889A JP500777A JP500777A JPS5390889A JP S5390889 A JPS5390889 A JP S5390889A JP 500777 A JP500777 A JP 500777A JP 500777 A JP500777 A JP 500777A JP S5390889 A JPS5390889 A JP S5390889A
Authority
JP
Japan
Prior art keywords
dfb laser
layer
cladding layer
ensure
providing
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
JP500777A
Other languages
Japanese (ja)
Inventor
Tadahisa Oota
Takeshi Kobayashi
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 JP500777A priority Critical patent/JPS5390889A/en
Publication of JPS5390889A publication Critical patent/JPS5390889A/en
Pending 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
    • H01S5/12—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 the resonator having a periodic structure, e.g. in distributed feedback [DFB] lasers

Landscapes

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

Abstract

PURPOSE:To ensure a long life for the semiconductor DFB laser, by providing the cladding layer, the first crystal layer, the active layer and the cladding layer sequentially on the first conductive substrate.
JP500777A 1977-01-21 1977-01-21 Dfb laser Pending JPS5390889A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP500777A JPS5390889A (en) 1977-01-21 1977-01-21 Dfb laser

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP500777A JPS5390889A (en) 1977-01-21 1977-01-21 Dfb laser

Publications (1)

Publication Number Publication Date
JPS5390889A true JPS5390889A (en) 1978-08-10

Family

ID=11599484

Family Applications (1)

Application Number Title Priority Date Filing Date
JP500777A Pending JPS5390889A (en) 1977-01-21 1977-01-21 Dfb laser

Country Status (1)

Country Link
JP (1) JPS5390889A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS502884A (en) * 1973-05-09 1975-01-13
JPS5087287A (en) * 1973-12-03 1975-07-14

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS502884A (en) * 1973-05-09 1975-01-13
JPS5087287A (en) * 1973-12-03 1975-07-14

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