High-speed InP-based modified uni-traveling carrier photodiodes with top p-contact on silicon-on-insulator nanowaveguides are reported. The photodiodes have low dark current (1 nA), high bandwidth (65 GHz), and deliver record-high RF output power at 70 GHz (–2 dBm at 20 mA). Balanced and traveling-wave photodiodes of this type have bandwidths of 20 and 35 GHz, respectively.
We demonstrate high-speed and high-power evanescently coupled waveguide integrated modified unitraveling carrier photodiodes. Over 105-GHz bandwidth along with 2 and 1.3 dBm RF output power at 100 and 105 GHz, respectively, has been achieved.
We demonstrate high speed and high power evanescently-coupled waveguide modified uni-traveling-carrier photodiodes. These devices achieved 70 GHz bandwidth and as high as 7.8 dBm RF output power at 60 GHz.
In this paper, we propose a Fast Fourier Transform(FFT) -based channel estimation algorithm for maximum-likelihood sequence estimation(MLSE) compensa-tion in optical fiber communication system, which is more effective than the conventional algorithm based on probability density function(PDF) algorithm and has well simulation results.
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