SE9303077L - Method and control circuit for controlling a laser diode transmitter - Google Patents

Method and control circuit for controlling a laser diode transmitter

Info

Publication number
SE9303077L
SE9303077L SE9303077A SE9303077A SE9303077L SE 9303077 L SE9303077 L SE 9303077L SE 9303077 A SE9303077 A SE 9303077A SE 9303077 A SE9303077 A SE 9303077A SE 9303077 L SE9303077 L SE 9303077L
Authority
SE
Sweden
Prior art keywords
laser diode
control circuit
controlling
diode transmitter
mean
Prior art date
Application number
SE9303077A
Other languages
Swedish (sv)
Other versions
SE9303077D0 (en
SE516099C2 (en
Inventor
Denis O'shea
Original Assignee
Nokia Telecommunications Oy
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 Nokia Telecommunications Oy filed Critical Nokia Telecommunications Oy
Publication of SE9303077D0 publication Critical patent/SE9303077D0/en
Publication of SE9303077L publication Critical patent/SE9303077L/en
Publication of SE516099C2 publication Critical patent/SE516099C2/en

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
    • H04B10/564—Power control
    • 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
    • H04B10/501—Structural aspects
    • H04B10/503—Laser transmitters
    • H04B10/504—Laser transmitters using direct modulation
    • 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
    • H01S5/06—Arrangements for controlling the laser output parameters, e.g. by operating on the active medium
    • H01S5/068—Stabilisation of laser output parameters
    • H01S5/0683—Stabilisation of laser output parameters by monitoring the optical output parameters
    • H01S5/06832—Stabilising during amplitude modulation

Landscapes

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

Abstract

The invention relates to a control method and a control circuit for a laser diode transmitter. The control circuit comprises a monitoring photo diode means (PD) for detecting a portion of an optical output signal of the laser diode transmitter (LD) and generating a monitor signal (4a) representing said optical output signal. In the invention, the control circuit further comprises a peak level detector means (6, 7) for detecting the peak level of the monitor signal (4a) and the peak level of a data signal to be transmitted, first control means (2, 9) for controlling the peak level of the optical output of the laser diode transmitter (LD) on the basis of a difference between said peak levels detected by the peak level detector means (6, 7), mean level detector means (5, 8) for detecting the mean level of the monitor signal (4a) and the mean level of the data signal to be transmitted, and second control means (3, 10) for controlling the mean level of the output of the laser diode transmitter (LD) on the basis of a difference between said mean levels detected by the mean level detector means (5, 8).
SE9303077A 1991-03-21 1993-09-21 Method and control circuit for controlling the optical output level of a laser diode transmitter SE516099C2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI911382A FI911382A0 (en) 1991-03-21 1991-03-21 REGLERINGSFOERFARANDE OCH REGLERINGSKRETS FOER EN LASERDIODSAENDARE.
PCT/FI1992/000079 WO1992017007A1 (en) 1991-03-21 1992-03-20 Method and control circuit for controlling a laser diode transmitter

Publications (3)

Publication Number Publication Date
SE9303077D0 SE9303077D0 (en) 1993-09-21
SE9303077L true SE9303077L (en) 1993-11-11
SE516099C2 SE516099C2 (en) 2001-11-19

Family

ID=8532164

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9303077A SE516099C2 (en) 1991-03-21 1993-09-21 Method and control circuit for controlling the optical output level of a laser diode transmitter

Country Status (4)

Country Link
FI (1) FI911382A0 (en)
GB (1) GB2269932B (en)
SE (1) SE516099C2 (en)
WO (1) WO1992017007A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0913961B1 (en) * 1997-10-28 2003-12-10 Broadband Royalty Corporation Optical transmitter for reducing impulse noise in a fiber optic link
CN110707520B (en) * 2019-09-20 2021-01-08 武汉光迅科技股份有限公司 Drive circuit of directly-modulated laser and directly-modulated transmitter

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6190487A (en) * 1984-10-11 1986-05-08 Nippon Telegr & Teleph Corp <Ntt> Semiconductor laser drive circuit
DE3684079D1 (en) * 1985-09-30 1992-04-09 Toshiba Kawasaki Kk DEVICE FOR STABILIZING THE OPTICAL OUTPUT PERFORMANCE OF A SEMICONDUCTOR LASER.

Also Published As

Publication number Publication date
FI911382A0 (en) 1991-03-21
WO1992017007A1 (en) 1992-10-01
GB2269932A (en) 1994-02-23
SE9303077D0 (en) 1993-09-21
GB9319225D0 (en) 1993-12-15
GB2269932B (en) 1995-02-15
SE516099C2 (en) 2001-11-19

Similar Documents

Publication Publication Date Title
US5448629A (en) Amplitude detection scheme for optical transmitter control
TW331049B (en) Optoelectronic transceiver module laser diode stabilizer and bias control method
WO2004021158A3 (en) Apparatus equipped with an optical keyboard and optical input device
CA2245313A1 (en) Double analog/digital automatic power controlling device in optical fiber amplifier
DE69510829D1 (en) Controlled optical amplifier
US5373387A (en) Method for controlling the amplitude of an optical signal
ES2042512T3 (en) METHOD OF REGULATION OF THE OPTICAL LASER POWER AND CIRCUIT THAT IT IMPLEMENTS.
EP0385537A3 (en) Method of determining the monitor sensitivity of, and method and system for controlling a radiation emitting arrangement, and optical recording and/or reproducing apparatus including such a system
EP0820162A3 (en) Optical signal communication apparatus and optical signal communication method
EP1177458A1 (en) Laser photoelectric sensor
ATE250782T1 (en) SCANNER
SE9303077L (en) Method and control circuit for controlling a laser diode transmitter
EP0817415A3 (en) Wavelength-division-multiplexing optical amplifier device
EP0390525A3 (en) An optical pumping-type solid-state laser apparatus with a semiconductor laser device
EP0347202A3 (en) Excitation system for a semiconductor laser device
GB1539624A (en) Laser control system
DE59912707D1 (en) Light contrast scanner
EP0295682A3 (en) Wavelength selective optical recording and reproducing device
JPS5687818A (en) Reflex type position detector
FI934114A (en) REGLERINGSFOERFARANDE OCH REGLERINGSKRETS FOER EN LASERDIODSAENDARE
JPS6213612B2 (en)
JPS558006A (en) Semi-conductor laser output stabilizing method and device therefore
JPS57200953A (en) Optical record carrier reader
DE60207971D1 (en) Method and device for detecting crosstalk
WO1996009699A3 (en) Optical unit for restoring a pulse pattern, and receiver suitable for use in a transmission system comprising such a unit

Legal Events

Date Code Title Description
NUG Patent has lapsed