Abstract

A flexible method to measure the modulation efficiency and residual amplitude modulation, including non-linearities, of phase modulators is presented. The method is based on demodulation of the modulated optical field in the optical domain by means of a heterodyne interferometer and subsequent analysis of the I&Q quadrature components of the corresponding RF beat note signal. As an example, we determine the phase modulation efficiency and residual amplitude modulation for both the TE and TM modes of a GaAs chip-based phase modulator at the wavelength of 1064 nm. From the results of these measurements, we estimate the linear and quadratic electro-optic coefficients for a P-p-n-N GaAs/AlGaAs double heterostructure.

© 2017 Optical Society of America

Characterization and control of the electro-optic phase dispersion in lithium niobate modulators for wide spectral band interferometry applications in the mid-infrared

S. Heidmann, G. Ulliac, N. Courjal, and G. Martin
Appl. Opt. 56(14) 4153-4157 (2017)

Characterization of the phase modulation property of a free-space electro-optic modulator by interframe intensity correlation matrix

Huimin Yue, Lei Song, Zexiong Hu, Hongxiang Liu, Yong Liu, Yongzhi Liu, and Zengshou Peng
Appl. Opt. 51(19) 4457-4462 (2012)

Intensity dependent residual amplitude modulation in electro-optic phase modulators

Juna Sathian and Esa Jaatinen
Appl. Opt. 51(16) 3684-3691 (2012)

Characterization of high-speed electro-optic phase modulators based on heterodyne carrier mapping at a fixed low-frequency

Ying Xu, Shangjian Zhang, Xinhai Zou, Zhongtao Ruan, Yutong He, Heping Li, Yali Zhang, Zhiyao Zhang, Yong Liu, and Ninghua Zhu
Opt. Express 31(2) 1656-1665 (2023)

Efficient single-mode GaAs/AlGaAs W waveguide phase modulator with a low propagation loss

Young Tae Byun, Kyung Hyun Park, Sun Ho Kim, Sang Sam Choi, Jong Chang Yi, and Tong Kun Lim
Appl. Opt. 37(3) 496-501 (1998)