Patent ID: 7050666
Filing Date: 2006-05-23
Classification: B82Y,G02B,G02F,H01S,H04B,H04J

Abstract:
1. An optical receiver photonic integrated circuit (RxPIC) system comprising: a monolithic semiconductor chip having an input to receive a WDM combined channel signal comprising a plurality of optical channel signals of different wavelengths; an integrated decombiner coupled to said input to receive said WDM combined channel signal and separate the same into said channel signals; a plurality of outputs from said decombiner that each receives a separated channel signal; an array of integrated photodetectors that each receive a separated channel signal and together provide a plurality of electrical signals representative of the optical channel signals; an electronic amplifier to receive and amplify said electrical signals; an electronic dispersion equalization (EDE) circuit coupled to receive and adjust said amplified electrical signals for timing errors due to imperfect clock recovery of said electrical signals; a clock and data recover (CDR) circuit to recover a signal clock and data signals from said electrical signals; a FEC decoder to receive said electrical signals and correct for error bits in said recovered data signals and provide bit error rates for each of said electrical signals; and a feedback circuit coupled to said electronic dispersion equalization (EDE) circuit from said FEC decoder to provide feedback representative of timing errors in said recovered data signals.