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High-speed monolithic GaInAs twin-pin photodiode for balanced optical coherent receivers

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5 Author(s)
M. Makiuchi ; Fujitsu Labs. Ltd., Atsugi, Japan ; H. Hamaguchi ; T. Kumai ; A. Kuramata
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A high-speed, monolithic GaInAs twin-pin photodiode has been fabricated for balanced optical coherent receiver applications. A very small capacitance of 80 fF, a high quantum efficiency of 80% and -3 dB cutoff frequency of more than 13 GHz have been achieved. An intensity modulation suppression of -30 dB has been measured up to 7 GHz, which provides evidence of an excellent balance between the characteristics of the two photodiodes.

Published in:

Electronics Letters  (Volume:25 ,  Issue: 17 )