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Journal of Applied Sciences
  Year: 2007 | Volume: 7 | Issue: 4 | Page No.: 559-564
DOI: 10.3923/jas.2007.559.564
 
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High-performance Optical Receivers Using Conventional Sub-micron CMOS Technology for Optical Communication Applications

F. Touati, S. Douss, N. Elfadil, Z. Nadir, M.B. Suwailam and M. Loulou

Abstract:
A novel sub-micron total-CMOS common-gate Transimpedance Amplifier (TIA) has been designed for high-speed optical communication applications. This total-CMOS approach has given a tremendous flexibility in optimizing the circuit for high performance. The new design shows superior performance compared to recent common-gate and common-base TIAs. Using conventional 0.8 μm CMOS process parameters, simulations showed a transimpedance gain of 69.0 dB over a 3.5 GHz bandwidth, approaching the technology fT of 10 GHz. The mean input referred noise current density was calculated to be 21.2 pA/Hz0.5 at 3.5 GHz, giving an input optical sensitivity of -20.4 dBm for a BER of 10-9. This allows a data transmission easily at 2.5 Gbps for a NRZ synchronous link. The power consumption is only 44 mW when AC coupled to a 50 Ω load. In addition, the TIA was designed to tolerate a relatively wide variation in bias conditions while preserving stability. Moreover, simulations using a 0.6 μm CMOS process showed even lower noise and wider bandwidth now at 6.0 GHz. The new design approaches similar IC designs in Si-bipolar or GaAs technologies. The design is the first reported TIA, which combines such features and using conventional 0.8 μm CMOS transistors with fT = 10 GHz.
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How to cite this article:

F. Touati, S. Douss, N. Elfadil, Z. Nadir, M.B. Suwailam and M. Loulou, 2007. High-performance Optical Receivers Using Conventional Sub-micron CMOS Technology for Optical Communication Applications. Journal of Applied Sciences, 7: 559-564.

DOI: 10.3923/jas.2007.559.564

URL: https://scialert.net/abstract/?doi=jas.2007.559.564

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