Abstract
Phased arrays are important key components in wavelength-division multiplexing (WDM) systems.1 We have realized a 4-channel WDM receiver combining a phased array with photodetectors on InP with a Si bipolar transimpedance amplifier2 The channels are spaced at 2.0 nm with a 1.0-nm flat passband3 On chip loss was 6-7 dB and detector efficiency was better than 90%. The optical cross talk remains below −20 dB. The electrical bandwidth per channel was 1 GHz. The electrical cross talk at 1 GHz after detection is below −25 dH. We have tested this receiver in a full 4-channel system.
© 1996 Optical Society of America
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