JPS5693444A - Laser beam transmission device - Google Patents

Laser beam transmission device

Info

Publication number
JPS5693444A
JPS5693444A JP17370379A JP17370379A JPS5693444A JP S5693444 A JPS5693444 A JP S5693444A JP 17370379 A JP17370379 A JP 17370379A JP 17370379 A JP17370379 A JP 17370379A JP S5693444 A JPS5693444 A JP S5693444A
Authority
JP
Japan
Prior art keywords
output
driving circuit
signal
laser diode
mode noise
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
JP17370379A
Other languages
Japanese (ja)
Other versions
JPS5928302B2 (en
Inventor
Masahiro Okamoto
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP54173703A priority Critical patent/JPS5928302B2/en
Publication of JPS5693444A publication Critical patent/JPS5693444A/en
Publication of JPS5928302B2 publication Critical patent/JPS5928302B2/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
    • H04B10/50—Transmitters

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Optical Communication System (AREA)

Abstract

PURPOSE:To modulate the analogue signal directly without the premodulating circuit, by providing the interference eliminator which eliminates nonlinear distortion and mode noise included in the light output of the laser diode. CONSTITUTION:Analogue signal input (a) is applied to laser diode (LD) driving circuit 1, and this LS driving circuit 1 drives LD2 to output a optical signal corresponding to analogue signal input (a). This output signal is received by photodiode 4 and is converted to an electric signal and is amplified by APC amplifier 3 and is fed back to LD driving circuit 1, thereby performing automatic phase control. Then, the output optical signal of LD2 has nonlinear distortion and mode noise eliminated by interference eliminator 5 using rod glass and is transmitted to optical fiber cord 6.
JP54173703A 1979-12-26 1979-12-26 Laser light transmission equipment Expired JPS5928302B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54173703A JPS5928302B2 (en) 1979-12-26 1979-12-26 Laser light transmission equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54173703A JPS5928302B2 (en) 1979-12-26 1979-12-26 Laser light transmission equipment

Publications (2)

Publication Number Publication Date
JPS5693444A true JPS5693444A (en) 1981-07-29
JPS5928302B2 JPS5928302B2 (en) 1984-07-12

Family

ID=15965553

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54173703A Expired JPS5928302B2 (en) 1979-12-26 1979-12-26 Laser light transmission equipment

Country Status (1)

Country Link
JP (1) JPS5928302B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6373901A (en) * 1986-09-16 1988-04-04 株式会社　パテイネ商会 Shoes

Also Published As

Publication number Publication date
JPS5928302B2 (en) 1984-07-12

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