Patent ID: 9235100
Filing Date: 2016-01-12
CPC Classification: B01D,G02F,H04B,H04J,H04L

Claim Text:
1. An integrated transmitting synthesizer for optical communication, generating an optical signal modulated between multiple phase states and between different states of polarization, comprising: a Y-branch dividing the light beam from a light source and producing a first and a second transmitting beams; the first and the second transmitting beams entering a first M-PSK modulator and a second M-PSK modulator, respectively, and producing a first and a second PSK-modulated output beams; a first and a second polarization controllers receiving the first and the second output modulated beams, respectively, and creating a third and a fourth beams having polarization state orthogonal to each other; wherein the third and the fourth beams are modulated between multiple phase states and between different states of polarization and form an output of the synthesizer, wherein the first M-PSK-modulated beam is reflected from a first mirror prior to entering the first MZ modulator, and the second MPSK-modulated beam is reflected from a second mirror prior to entering the second MZ modulator, and wherein the first and the second mirrors located on the back output surface of a planar chip; the first MZ modulator producing the first QAM-beam and the second MZ modulator producing the second QAM-beam; the first QAM-beam is reflected from a third mirror prior to entering the polarization combiner, and the second QAM-beam is reflected from a fourth mirror prior to entering the polarization combiner, wherein the third and fourth mirrors located on the front surface of the planar chip, the first, the second, the third and the fourth mirrors providing compactness critical to the synthesizer formation on the single chip; the polarization combiner outputting a dual-polarization QAM signal.