Silicon Photonic Direct-Detection Phase Retrieval Receiver

TL;DR

This paper presents a silicon photonic receiver capable of directly retrieving the phase of high-speed signals without additional local oscillators, using integrated dispersion and delay lines on a compact chip.

Contribution

It introduces a novel silicon photonic phase retrieval receiver that performs direct detection of complex signals on a chip, eliminating the need for traditional coherent detection setups.

Findings

Successfully retrieves the full field of a 30-GBd QPSK signal

Operates without a carrier or local oscillator

Uses integrated dispersion and delay lines on a silicon chip

Abstract

We demonstrate a direct-detection phase retrieval receiver based on silicon photonics. The receiver implements strong dispersion and delay lines on a compact chip. We retrieve the full field of a 30-GBd QPSK signal without a carrier or local oscillator.