PAPERS
Jiao Shilong, Yang Xianming, Zhao Liang, Li Hui, Chen Zhenlong, Chen Tangsheng, Shao Kai and Ye Yutang
Abstract: A high gain cascade connected preamplifier for optical receivers is developed with 0.5μm GaAs PHEMT technology from the Nanjing Electronic Devices Institute.To begin with,the transimpedance amplifier has a -3dB bandwidth of 10GHz,with a small signal gain of around 9dB.The post-stage distributed amplifier (DA) has a -3dB bandwidth of close to 20GHz,with a small signal gain of around 12dB.As a whole,the cascade preamplifier has a measured small signal gain of 213dB and a transimpedance of 55.3dBΩ in a 50Ω system.With a higher signal-to-noise ratio than that of the TIA and a markedly improved waveform distortion compared with that of the DA,the measured output eye diagram for 10Gb/s NRZ pseudorandom binary sequence is clear and symmetric.
Key words: GaAs PHEMT, optical receiver, preamplifier, eye diagram, cascade
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Article views: 3422 Times PDF downloads: 1053 Times Cited by: 0 Times
Received: 18 August 2015 Revised: 19 July 2007 Online: Published: 01 December 2007
| Citation: |
Jiao Shilong, Yang Xianming, Zhao Liang, Li Hui, Chen Zhenlong, Chen Tangsheng, Shao Kai, Ye Yutang. A 10Gb/s GaAs PHEMT High Gain Preamplifier for Optical Receivers[J]. Journal of Semiconductors, 2007, 28(12): 1902-1911.
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Jiao S L, Yang X M, Zhao L, Li H, Chen Z L, Chen T S, Shao K, Ye Y T. A 10Gb/s GaAs PHEMT High Gain Preamplifier for Optical Receivers[J]. Chin. J. Semicond., 2007, 28(12): 1902.
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