GB1550037A - Semiconductor laser modulator circuit - Google Patents

Semiconductor laser modulator circuit

Info

Publication number
GB1550037A
GB1550037A GB8094/78A GB809478A GB1550037A GB 1550037 A GB1550037 A GB 1550037A GB 8094/78 A GB8094/78 A GB 8094/78A GB 809478 A GB809478 A GB 809478A GB 1550037 A GB1550037 A GB 1550037A
Authority
GB
United Kingdom
Prior art keywords
semiconductor laser
modulator circuit
laser modulator
circuit
semiconductor
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.)
Expired
Application number
GB8094/78A
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Publication of GB1550037A publication Critical patent/GB1550037A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K15/00—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers
    • G06K15/02—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers using printers
    • G06K15/12—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers using printers by photographic printing, e.g. by laser printers
    • G06K15/1204—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers using printers by photographic printing, e.g. by laser printers involving the fast moving of an optical beam in the main scanning direction
    • G06K15/1209—Intensity control of the optical beam
    • G06K15/1214—Intensity control of the optical beam by feedback
    • 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
    • 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
    • H01S5/06812—Stabilisation of laser output parameters by monitoring or fixing the threshold current or other specific points of the L-I or V-I characteristics
GB8094/78A 1977-03-04 1978-03-01 Semiconductor laser modulator circuit Expired GB1550037A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2272477A JPS53108397A (en) 1977-03-04 1977-03-04 Modulation circuit for semiconductor laser

Publications (1)

Publication Number Publication Date
GB1550037A true GB1550037A (en) 1979-08-08

Family

ID=12090711

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8094/78A Expired GB1550037A (en) 1977-03-04 1978-03-01 Semiconductor laser modulator circuit

Country Status (3)

Country Link
JP (1) JPS53108397A (en)
DE (1) DE2809234C3 (en)
GB (1) GB1550037A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2468232A1 (en) * 1979-10-18 1981-04-30 Philips Nv REGULATION CIRCUIT FOR THE LASER EXCITATION CURRENT
EP0218449A2 (en) * 1985-09-30 1987-04-15 Kabushiki Kaisha Toshiba Apparatus for stabilizing the optical output power of a semiconductor laser

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1160592B (en) * 1978-08-16 1987-03-11 Cselt Centro Studi Lab Telecom PROCEDURE AND CONTROL SYSTEM OF THE EFFICIENCY OF AN ELECTRONIC DEVICE
DE3333247A1 (en) * 1983-09-14 1985-03-28 Siemens Ag OPTICAL TRANSMISSION SYSTEM WITH LASER CONTROL
US4558465A (en) * 1983-09-19 1985-12-10 Rca Corporation Switched bias scheme for high speed laser transmitter
US4718118A (en) * 1986-02-24 1988-01-05 Rca Corporation Transparent laser drive current update for burst mode fiber optic communication system
US4709416A (en) * 1986-02-24 1987-11-24 Rca Corporation Laser bias current stabilization for burst mode fiber optic communication system

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3898583A (en) * 1972-03-29 1975-08-05 Xerox Corp Laser stabilization technique

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2468232A1 (en) * 1979-10-18 1981-04-30 Philips Nv REGULATION CIRCUIT FOR THE LASER EXCITATION CURRENT
EP0218449A2 (en) * 1985-09-30 1987-04-15 Kabushiki Kaisha Toshiba Apparatus for stabilizing the optical output power of a semiconductor laser
EP0218449A3 (en) * 1985-09-30 1989-07-12 Kabushiki Kaisha Toshiba Apparatus for stabilizing the optical output power of a apparatus for stabilizing the optical output power of a semiconductor laser semiconductor laser

Also Published As

Publication number Publication date
DE2809234C3 (en) 1981-04-30
DE2809234A1 (en) 1978-09-07
DE2809234B2 (en) 1980-09-04
JPS53108397A (en) 1978-09-21
JPS5651514B2 (en) 1981-12-05

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19970301