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Updated: Jun 28, 2026

Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station
Published on: April 1, 2020
Dual-channel optical phase measurement system for improved precision
Ruey-Ching Twu1, Hao-Yang Hong, Hsuan-Hsien Lee
1Department of Electro-Optical Engineering, Southern Taiwan University, Tainan, Taiwan. rctwu@mail.stut.edu.tw
Abstract:
Developments and applications of a dual-channel phase measurement system are being proposed and experimentally studied by utilizing an optical homodyne technique. In this measurement system, the phase modulation was adopted by using a near-stable Zn-indiffused lithium niobate phase modulator. The proposed method was successfully applied on the simultaneous measurements of the phase-retardation difference between a transmitted light and a reflected light after passing through a nonpolarization beam splitter. The measured stability of the phase-retardation difference was approximately 0.0013 rad.
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