A 3-V fully differential distributed limiting driver for 40-Gb/s optical transmission systems

A fully differential 40-Gb/s electro-absorption modulator driver is presented. Based on a distributed limiting architecture, the circuit can supply up to 3.0-V/sub pp/ (peak-to-peak) per side in a 50-/spl Omega/ load at data rates as high as 44 Gb/s. Both the input and the output are internally matc...

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Bibliographic Details
Published in:IEEE journal of solid-state circuits 2003-09, Vol.38 (9), p.1485-1496, Article 485
Main Authors: McPherson, D.S., Pera, F., Tazlauanu, M., Voinigescu, S.P.
Format: Article
Language:English
Subjects:
Architecture
Circuits
Constraining
Double heterojunction bipolar transistors
Driver circuits
Drivers
FETs
High speed integrated circuits
High speed optical techniques
Impedance matching
Mathematical analysis
Modulators
Noise levels
Optical fiber communication
Optical modulation
Optical transmitters
PHEMTs
Transistor logic
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Summary:A fully differential 40-Gb/s electro-absorption modulator driver is presented. Based on a distributed limiting architecture, the circuit can supply up to 3.0-V/sub pp/ (peak-to-peak) per side in a 50-/spl Omega/ load at data rates as high as 44 Gb/s. Both the input and the output are internally matched to 50 /spl Omega/ and exhibit return loss of better than 10 dB up to 50 GHz. Additional features of the driver include the use of a single -5.2-V supply, output swing control (1.7-3.0-V/sub pp/ per side), dc output offset control (-0.15 V to -1.1 V), and pulsewidth control (30% to 66%). The driver architecture was optimized based on a comprehensive analytical derivation of the frequency response of cascaded source-coupled field-effect transistor logic blocks using both single and double source-follower topologies.
ISSN:0018-9200
1558-173X
DOI:10.1109/JSSC.2003.815924