High speed semiconductor laser driver circuits

Details High speed semiconductor laser driver circuits High speed semiconductor laser driver circuits

1997-07-03

1999-03-16

Sanghavi, Hemang

Coherent light generators

Particular component circuitry

Optical pumping

372 34, H01S 300

Patent

active

058839100

ABSTRACT:
A semiconductor laser driver circuit that provides single supply operation over a wide supply voltage range (e.g., 3 V to 5.5 V), is capable of high speed data transmission, and is programmable over a wide laser modulation current range (such as 5 mA to 60 mA). The circuit includes temperature sensitive circuits to adjust for changes in Vbe over the operating temperature range, and to adjust a bias current to maintain transistor g.sub.m in the presence of temperature changes. Also included is an adaptive drive feature to accommodate different laser drive currents. Details of these and other features are disclosed.

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patent: 5734668 (1998-03-01), Raven et al.
patent: 5736844 (1998-04-01), Yanagisawa
patent: 5742133 (1998-04-01), Wilhelm et al.
"A Versatile Si-Bipolar Driver Circuit with High Output Voltage Swing for External and Direct Laser Modulation in 10 Gb/s Optical-Fiber Links", Rein et al., IEEE Journal of Solid-State Circuits, vol. 29, No. 9, Sep. 1994.
"A Speed, Power, and Supply Noise Evaluation of ECL Driver Circuits", Jouppi et al., IEEE Journal of Solid-State Circuits, vol. 31, No. 1, Jan. 1996.
Sony CXB1108AQ Laser Driver Data Sheet.
Sony CXB1118AQ/1128AQ Laser Driver Data Sheet.
Maxim MAX3261 Data Sheet, Rev. 3, Aug. 1996.

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