CMOS Silicon Receiver Integrated With Ge Detector and Reconfigurable Optical Filter |
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Authors: | Rasras M. S. Gill D. M. Earnshaw M. P. Doerr C. R. Weiner J. S. Bolle C. A. Chen Y.-K. |
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Affiliation: | Integrated Photonics Research, Alcatel-Lucent/Bell Labs, Murray Hill, United States; |
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Abstract: | We demonstrate a complmentary metal–oxide–semiconductor (CMOS)-compatible and widely tunable filter with an integrated germanium detector. The filter uses two stages of sixth-order pole-zero filtering cascaded in a vernier fashion to achieve simultaneous tunability and adjustable passband bandwidth from 25 to 50 GHz tuned over a wavelength range $>$12 nm. The out-of-band crosstalk rejection is $sim$30 dB. The monolithically integrated detector has a bandwidth of 6 GHz. We also demonstrate a modified detector design which showed a bandwidth of 11 GHz/s and responsivity of 0.75 A/W. |
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