Patent ID: 9094131
Filing Date: 2015-07-28
Classification: H04B,H04L

Abstract:
1. A signal generating apparatus, comprising a first adjustment module, a polarization beam splitter, a first quadrature phase shift keying modulator, a second quadrature phase shift keying modulator, a second adjustment module, and a polarization beam combiner, wherein the first adjustment module is configured to adjust an incident angle of an optical signal entering the polarization beam splitter, so that the polarization beam splitter outputs a first optical signal and a second optical signal that have a preset power ratio; wherein the first quadrature phase shift keying modulator is configured to modulate the first optical signal by using an externally input data stream, so as to obtain a first quadrature phase shift keying optical signal; wherein the second quadrature phase shift keying modulator is configured to modulate the second optical signal by using an externally input data stream, so as to obtain a second quadrature phase shift keying optical signal; wherein the second adjustment module is configured to adjust, before the first quadrature phase shift keying optical signal and the second quadrature phase shift keying optical signal are input into the polarization beam combiner, at least one polarization state selected from the group consisting of: and wherein the polarization beam combiner is configured to conditionally output: