| Citation: |
Li Wenyuan, Wang Zhigong. A GaAs PHEMT Laser/Modulator Driver for 24 Gb/s Optical Transmitters[J]. Journal of Semiconductors, 2005, In Press.
Li W Y, Wang Z G. A GaAs PHEMT Laser/Modulator Driver for 24 Gb/s Optical Transmitters[J]. Chin. J. Semicond., 2005, 26(12): 2455.
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A GaAs PHEMT Laser/Modulator Driver for 24 Gb/s Optical Transmitters
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Abstract
An integrated laser and optical modulator driver for ultra-high speed optic-fiber communication systems is designed and fabricated in a 0.2μm gate length AlGaAs/InGaAs/GaAs pseudomorphic high electron mobility transistor (PHEMT) process.The circuit consists of two stages of differential amplifiers with source follower pairs,a capacitive coupled current amplifier,and an output circuit.The driver IC occupies a die area of 1.0mm×0.9mm.Under a single supply of ＋5V,the power consumption is about 1.5W.Open eye diagrams are measured at a bit rate of up to 24Gb/s with a 2.4Vp-p voltage swing.It can be used in synchronous digital hierarchy transmission systems of optic-fiber communication.-
Keywords:
- PHEMT,
- laser/modulator driver,
- amplifier,
- optic-fiber communication
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References
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Proportional views
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