6 March 2013 InP-PD integration on silica-based PLC for QPSK receiver
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Proceedings Volume 8628, Optoelectronic Integrated Circuits XV; 86280L (2013) https://doi.org/10.1117/12.2005888
Event: SPIE OPTO, 2013, San Francisco, California, United States
Abstract
We review our recent progress on the heterogeneous integration of high-speed InP photodiodes (PDs) on a silica-based planar lightwave circuit (PLC) with the goal of realizing a small photonic integrated circuit (PIC) device with excellent performance. Heterogeneous integration technology is a combination of monolithic InP fabrication and angled micro-mirror etching processes, and provides low-loss optical coupling between them without any complicated optical alignment. Also, by employing 2.5%-Δ waveguides with a bending radius of 1 mm, we can reduce the chip size required for compact PIC devices. We demonstrated a dual-polarization quadrature-phase-shift-keying (DP-QPSK) coherent detector composed of a variable optical attenuator (VOA), a polarization beam splitter (PBS), eight high-speed PDs, two 90-degree optical hybrids (OHs) and micro-mirrors. Heterogeneous technology on silica-based PLCs will be an attractive way to provide compact high performance PICs for future photonic networks.
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Mikitaka Itoh, Toshikazu Hashimoto, "InP-PD integration on silica-based PLC for QPSK receiver", Proc. SPIE 8628, Optoelectronic Integrated Circuits XV, 86280L (6 March 2013); doi: 10.1117/12.2005888; https://doi.org/10.1117/12.2005888
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