CMOS Silicon Receiver Integrated with Ge Detector and Reconfigurable Optical Filter
15 January 2010
Abstract: We demonstrate a CMOS-compatible and widely tunable filter with an integrated germanium detector. The filter uses two stages of 6th order pole-zero filtering cascaded in a vernier fashion to achieve simultaneous tunability and adjustable passband bandwidth from 25 GHz to 50 GHz tuned over wavelength range > 12nm.
The out-of-band crosstalk rejection is ~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. © 2009 Optical Society of America OClS codes: (130.1750) Components; (250.5300) Photonic Integrated Circuits