US 11,899,253 B2
Polarization splitter and rotator
Yunchu Li, Horseheads, NY (US); Austin G. Griffith, Ithaca, NY (US); and Rich R. Grzybowski, Corning, NY (US)
Assigned to MACOM Technology Solutions Holdings, Inc., Lowell, MA (US)
Filed by MACOM Technology Solutions Holdings, Inc., Lowell, MA (US)
Filed on May 26, 2021, as Appl. No. 17/330,772.
Application 17/330,772 is a continuation of application No. 16/580,824, filed on Sep. 24, 2019, granted, now 11,048,052.
Prior Publication US 2021/0278610 A1, Sep. 9, 2021
Int. Cl. G02B 6/42 (2006.01); G02B 6/27 (2006.01); G02B 6/122 (2006.01); G02B 6/126 (2006.01); H04B 10/50 (2013.01); G02F 1/01 (2006.01); G02F 1/025 (2006.01)
CPC G02B 6/4213 (2013.01) [G02B 6/126 (2013.01); G02B 6/1228 (2013.01); G02B 6/2726 (2013.01); G02B 6/2766 (2013.01); G02B 6/2773 (2013.01); G02F 1/01 (2013.01); H04B 10/50 (2013.01); G02F 1/025 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A method of transmitting a plurality of optically modulated signals for output to a fiber system, the method comprising the steps of:
providing a first laser source configured to emit light of a first wavelength having a first polarization and a second laser source configured to emit light of a second wavelength having the first polarization, the second wavelength being different than the first wavelength;
receiving a first portion of the light emitted by the first laser source with a first modulator and a second portion of the light emitted by the first laser source with a second modulator;
receiving a first portion of the light emitted by the second laser source with a third modulator and a second portion of the light emitted by the second laser source with a fourth modulator;
outputting a first modulated optical signal from the first modulator, the first modulated optical signal having the first polarization;
outputting a second modulated optical signal from the second modulator, the second modulated optical signal having the first polarization;
outputting a third modulated optical signal from the third modulator, the third modulated optical signal having the first polarization;
outputting a fourth modulated optical signal from the fourth modulator, the fourth modulated optical signal having the first polarization;
multiplexing the first modulated optical signal and the third modulated optical signal to provide a first multiplexed optical signal having the first polarization;
multiplexing the second modulated optical signal and the fourth modulated optical signal to provide a second multiplexed optical signal having the first polarization;
altering the second multiplexed optical signal to have a second polarization, the second polarization being different from the first polarization; and
combining the first multiplexed optical signal having the first polarization and the second multiplexed optical signal having the second polarization into a third optical signal.