JPS6413503A - Optical fiber communication system - Google Patents

Optical fiber communication system

Info

Publication number
JPS6413503A
JPS6413503A JP62168630A JP16863087A JPS6413503A JP S6413503 A JPS6413503 A JP S6413503A JP 62168630 A JP62168630 A JP 62168630A JP 16863087 A JP16863087 A JP 16863087A JP S6413503 A JPS6413503 A JP S6413503A
Authority
JP
Japan
Prior art keywords
light
level
natural emission
emission light
communication system
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
JP62168630A
Other languages
Japanese (ja)
Other versions
JP2855525B2 (en
Inventor
Kiyobumi Mochizuki
Noboru Edakawa
Yoshinao Iwamoto
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.)
KDDI Corp
Original Assignee
Kokusai Denshin Denwa KK
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 Kokusai Denshin Denwa KK filed Critical Kokusai Denshin Denwa KK
Priority to JP62168630A priority Critical patent/JP2855525B2/en
Publication of JPS6413503A publication Critical patent/JPS6413503A/en
Application granted granted Critical
Publication of JP2855525B2 publication Critical patent/JP2855525B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Semiconductor Lasers (AREA)
  • Optical Communication System (AREA)
  • Light Guides In General And Applications Therefor (AREA)
  • Optical Couplings Of Light Guides (AREA)

Abstract

PURPOSE:To suppress the influence of a natural emission light, and to obtain a sufficient S/N, by using an optical filter to which transmission light spectrum width is set so that a level of the accumulated natural emission light exceeds a level of an optical signal. CONSTITUTION:As for each light amplifier 3-2 of plural pieces of light amplifying repeaters, an optical filter 3-1 to which transmission light spectrum width is set so that a level of the accumulated natural emission light does not exceed a level of an optical signal is provided on an optical fiber communication system. That is, the light amplifier 3-2 generates a natural emission light, in addition to an amplification of the optical signal. Also, the natural emission light having a wide power spectrum is eliminated by the optical filter 3-1 of narrow spectrum width, which a signal light transmits through.
JP62168630A 1987-07-08 1987-07-08 Optical fiber communication system Expired - Lifetime JP2855525B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62168630A JP2855525B2 (en) 1987-07-08 1987-07-08 Optical fiber communication system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62168630A JP2855525B2 (en) 1987-07-08 1987-07-08 Optical fiber communication system

Publications (2)

Publication Number Publication Date
JPS6413503A true JPS6413503A (en) 1989-01-18
JP2855525B2 JP2855525B2 (en) 1999-02-10

Family

ID=15871610

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62168630A Expired - Lifetime JP2855525B2 (en) 1987-07-08 1987-07-08 Optical fiber communication system

Country Status (1)

Country Link
JP (1) JP2855525B2 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53120544A (en) * 1977-03-30 1978-10-21 Toshiba Corp Optical transmitter
JPS5834407A (en) * 1981-08-25 1983-02-28 Nec Corp Light transmission line

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53120544A (en) * 1977-03-30 1978-10-21 Toshiba Corp Optical transmitter
JPS5834407A (en) * 1981-08-25 1983-02-28 Nec Corp Light transmission line

Also Published As

Publication number Publication date
JP2855525B2 (en) 1999-02-10

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