PDM DQPSK silicon receiver with integrated monitor and minimum number of controls
15 April 2012
We demonstrate a novel polarization-division multiplexed (PDM) differential quadrature phase-shift keying (DQPSK) receiver. It has the minimum number of analog controls and an integrated polarization interference monitor for polarization tracking. We achieve nine times tracking speed improvement over our previous work for 43-Gb/s PDM-DQPSK. This improved device can also tolerate polarization-dependent loss in the link.