Patent ID: 8548333
Filing Date: 2013-10-01
Classification: H04B,H04J

Abstract:
1. A transceiver having an input and an output, comprising: a substrate; a laser provided on the substrate, which provides an optical signal having a wavelength; a modulator having an output, the modulator being configured to receive a first portion of the optical signal and provide a first modulated output at the output of the modulator; a multiplexer circuit coupled to the modulator, the multiplexer circuit configured to receive the first modulated output signal and provide a first multiplexed output signal at the output of the transceiver in response to the first modulated output signal; a polarization rotator circuit that rotates a polarization of first multiplexed output signal; a demultiplexer circuit configured to receive a second multiplexed output signal at the input of the transceiver and provide a second modulated output signal, the second multiplexed output signal the second modulated output signal being a portion of the second multiplexed output signal; an optical hybrid circuit provided on the substrate, the optical hybrid having first and second inputs, the optical hybrid circuit configured to receive a second portion of the optical signal at the first input and the second modulated output signal at the second input.