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Related Experiment Video

Updated: May 8, 2026

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

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

Published on: April 1, 2020

Compact and phase-error-robust multilayered AWG-based wavelength selective switch driven by a single LCOS.

Keisuke Sorimoto¹, Ken Tanizawa, Hisato Uetsuka

¹Graduate School of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kouhokuku, Yokohama 223-8522, Japan. sorimoto@tsud.elec.keio.ac.jp

|August 14, 2013

Summary

This summary is machine-generated.

A new liquid crystal on silicon (LCOS) based wavelength selective switch (WSS) uses a single LCOS for both switching and phase-error compensation, reducing size and cost. This advanced WSS enables error-free 40-Gbit/s signal transmission.

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Quasi-light Storage for Optical Data Packets

Quasi-light Storage for Optical Data Packets

Published on: February 6, 2014

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Last Updated: May 8, 2026

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

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

Published on: April 1, 2020

Quasi-light Storage for Optical Data Packets

Quasi-light Storage for Optical Data Packets

Published on: February 6, 2014

Area of Science:

Photonics and Optical Engineering
Telecommunications Technology
Materials Science

Background:

Wavelength Selective Switches (WSS) are crucial for optical network flexibility.
Previous LCOS-based WSS designs faced challenges with large footprints and high costs due to dual-LCOS configurations.
Need for compact and cost-effective WSS solutions in high-capacity optical networks.

Purpose of the Study:

To propose, fabricate, and demonstrate a novel, compact, and cost-effective LCOS-based WSS.
To integrate switching and phase-error compensation functions onto a single LCOS.
To reduce the overall volume and component count of the WSS system.

Main Methods:

Utilized a multilayered arrayed waveguide grating (AWG) as the core multiplex/demultiplexer.
Employed a single Liquid Crystal on Silicon (LCOS) device for both spectrally decomposed beam deflection and phase error compensation.
Incorporated a folded optical configuration with a reflector to enable single-LCOS operation.

Main Results:

Achieved a 40% reduction in WSS optics volume (80 × 100 × 60 mm³).
Demonstrated low polarization-dependent loss (< 1.5 dB) and inter-channel crosstalk (< -21.0 dB).
Successfully performed error-free transmission of a 40-Gbit/s NRZ-OOK signal.

Conclusions:

The single-LCOS WSS configuration offers significant advantages in size and cost reduction.
The proposed design maintains high optical performance metrics.
This technology is suitable for high-speed optical signal routing and management.