An integrated optical tracking module chip uses an optical phased array and analog drive to steer beams electronically without moving parts.
Pre-compensating digital signals with adaptive coefficients reduces return interference and insert loss at separated ASIC-optical module connectors.
Variable resistor bypass circuit suppresses frequency peaking in optical receiver transimpedance amplifiers to maintain signal linearity.
An optical channel sounding transmitter generates carrier signals modulated with constant-amplitude zero auto-correlation sequences for precise detection.
Adaptive trellis-based processors mitigate inter-symbol interference and phase noise in digital multiband signals.
A coherent receiver detects phase difference and delay using cross-correlation operations on I-channel and Q-channel signals.