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We report on a 1011.1-Gb/s optoelectronic multiwavelength receiver with 100-GHz channel spacing and 14-dBm per-channel sensitivity. The device uses hybrid integration of separately optimized elements to achieve high optical sensitivity. A novel micromachined optical turning mirror has been developed to simplify the fabrication and assembly of the receiver.
A silicon-on-insulator bandpass filter based on the integration of a Mach-Zehnder interferometer with ring resonators and phase shifters is fabricated. The device exhibits wide tunability over both the central wavelength and bandwidth of the filter.
We discuss here the potential of compact ring-based high-order photonic integrated filters. Limitations related to fabrication tolerances and parasitic effects in high-index-contrast waveguides are also addressed and adaptive tuning of the filter parameters is proposed and demonstrated as a viable compensation strategy to maintain filter operation.
A continuously tunable delay of 8 bit-lengths at 10 and 25 Gbit/s is achieved by using a ring-based coupled-resonator-optical-waveguide fabricated in SiON technology. Fractional loss below 1 dB per bit-delay and storage efficiencies exceeding 1 bit-delay per ring-resonator are demonstrated.
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