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Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station

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All-optical phase discrimination using SOA.

Mark J Power, Roderick P Webb, Robert J Manning

|November 13, 2013

Summary

This summary is machine-generated.

This study demonstrates an all-optical phase discrimination technique, separating Quadrature Phase-Shift Keying (QPSK) signals into two Binary Phase-Shift Keying (BPSK) signals using nonlinear mixing in a semiconductor optical amplifier.

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Area of Science:

Optical communications
Nonlinear optics

Background:

Quadrature Phase-Shift Keying (QPSK) signals are crucial for high-capacity optical communication systems.
Efficient all-optical signal processing techniques are needed to enhance data transmission rates.

Purpose of the Study:

To experimentally demonstrate a novel all-optical phase discrimination technique.
To separate orthogonal phase components of a QPSK signal onto different frequencies for demodulation.

Main Methods:

Exploiting nonlinear mixing in a semiconductor optical amplifier (SOA).
Separating a 10.65 Gbaud QPSK signal into two 10.65 Gb/s BPSK signals.
Demodulating the BPSK signals using a delay interferometer (DI).

Main Results:

Successful separation of QPSK signal into two BPSK signals.
Verification of correct operation through eye diagrams and spectral measurements.
Observed conversion efficiency greater than 9 dB on both output BPSK channels.

Conclusions:

The demonstrated technique offers an effective all-optical method for QPSK signal discrimination.
This approach has potential for advancing high-speed optical communication systems.