Transcript Optical Receivers - Queen's University

Coherent Systems: 112 Gb/s PM QPSK
Drive Amplifier
EDFA
DAC
Input
Signal
DSP
Laser
DAC
Transmitted
Optical
Signal
IQ
Modulator
Drive Amplifier
QPSK signals with orthogonal states-of-polarization (X and Y) are combined.
This is referred to as polarization multiplexing (PM).
Input Signal
PBS
BPD
ADC
Ix Data
BPD
ADC
Qx Data
90o
hybrid
DSP
BPD
ADC
Iy Data
BPD
ADC
Qy Data
o
Local
Oscillator
PMS
90
hybrid
ELEC-486 Fiber-Optic Communications