US 12,323,232 B2
Multi-carrier transmitter with integrated multiplexer and receiver with integrated demultiplexer
Joe Qingzhe Wen, Fremont, CA (US); and Zhong Pan, San Jose, CA (US)
Assigned to Lumentum Operations LLC, San Jose, CA (US)
Filed by Lumentum Operations LLC, San Jose, CA (US)
Filed on Dec. 14, 2022, as Appl. No. 18/066,006.
Claims priority of provisional application 63/374,779, filed on Sep. 7, 2022.
Prior Publication US 2024/0080124 A1, Mar. 7, 2024
Int. Cl. H04J 14/06 (2006.01); H04B 10/61 (2013.01)
CPC H04J 14/06 (2013.01) [H04B 10/614 (2013.01); H04B 10/6163 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An optical device, comprising:
an optical transmitter, comprising:
a first modulation component configured to modulate a first optical carrier signal to generate a first modulation signal and a second modulation signal;
a second modulation component configured to modulate a second optical carrier signal, different than the first optical carrier signal, to generate a third modulation signal and a fourth modulation signal;
a first polarization beam combiner configured to combine the first modulation signal and the second modulation signal to generate a first transmission signal;
a second polarization beam combiner configured to combine the third modulation signal and the fourth modulation signal to generate a second transmission signal; and
a multiplexing component integrated into the optical transmitter and configured to generate an output signal by multiplexing the first transmission signal and the second transmission signal, wherein the multiplexing component includes a first tuning element configured to enable tuning of a first phase delay of the multiplexing component to maintain an effective insertion loss associated with the optical transmitter below 0.5 decibels (dB); and
an optical receiver, comprising:
a demultiplexing component integrated into the optical receiver and configured to demultiplex a reception signal into a first reception signal and a second reception signal, wherein the demultiplexing component includes a second tuning element configured to enable tuning of a second phase delay of the demultiplexing component to maintain an effective insertion loss associated with the optical receiver below 0.5 dB;
a first polarization beam splitter configured to split the first reception signal into a first optical signal and a second optical signal;
a second polarization beam splitter configured to split the second reception signal into a third optical signal and a fourth optical signal;
a first demodulation component configured to mix the first optical signal and the second optical signal with a first local oscillator signal to demodulate the first optical signal and the second optical signal; and
a second demodulation component configured to mix the third optical signal and the fourth optical signal with a second local oscillator signal to demodulate the third optical signal and the fourth optical signal.