PROJECT TITLE :
Calibrated Monolithically Integrated 90 Downconverter for Colorless Operation in the C+L Band
We tend to propose a 90 hybrid-primarily based monolithically integrated coherent receiver appropriate for colorless operation in the complete C- and L-band (1530–1625 nm). In-phase and quadrature (IQ) signal elements are obtained from a calibrated analog IQ recovery circuit, which adequately combines all the four photocurrents at the output of the ninety hybrid nearly cancelling the baseband interference from the self-beating of adjacent wavelength division multiplexing channels. We tend to numerically demonstrate that the proposed downconverter supports colorless reception of 128 channels with 16-quadrature amplitude modulation at 112 Gbps within the C+L band. Aside from this, this receiver exhibits a comprehensible dynamic vary, thereby not requiring a variable optical attenuator on the signal path, and it is pretty strong beneath realistic fabrication errors of the optoelectronic chip.
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