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Optical (de)multiplexers which can provide low insertion loss, low cross-talk, high thermal stability and insensitivity to fabrication tolerances are essential components for silicon photonics integration. In this paper we demonstrate the integration of an angled multimode interferometer coarse wavelength division multiplexer with germanium p-i-n photodetectors to form a 50 Gb/s receiver with a low insertion loss of < -0.5 dB and cross-talk of < -15 dB. The angled multimode interferometer hasdoi:10.1109/lpt.2014.2303578 fatcat:ekvei64r6baevb5sy7r3llgjiu