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High-performance segmented-waveguide TM polarizer is proposed. Extinction ratio >30dB and insertion loss <0.1dB are predicted for a 27.4m device. The fabricated 144m device had 18-29dB extinction and 1.4-2.3dB insertion loss over 110nm bandwidth.

Two-section heterogeneously integrated InP-on-Si DFB laser diodes are demonstrated. In the modulation response, the relaxation oscillation frequency of 10 GHz is followed by a second resonance to achieve nearly 25 GHz 3-dB modulation bandwidth and 45 Gbps NRZ-OOK transmission.

High-speed electro-absorption modulation of a heterogeneously integrated InP-on-Si DFB laser diode is demonstrated. The device has a 3-dB modulation bandwidth of 33 GHz and is used for the transmission of an 80 Gbps NRZ-OOK signal over 2 km of NZ-DS fiber with BER below the hard-decision forward-error-correction threshold using feed-forward equalization.