Abstract

Dispersion management is critical in many optical applications, whether to reduce impairments in fiber optic communication or chirp pulse amplification, or to create time stretch instruments for single-shot continuous recording of fast phenomena. The most common solutions for achieving large dispersion with low loss include dispersion compensation fiber, fiber Bragg grating, and diffraction grating pairs. Such dispersive elements have finite operational bandwidth, limited total dispersion, or insufficient power handling. In this Letter, we demonstrate a new, to the best of our knowledge, implementation of the chromo-modal dispersion device based on a silicon waveguide slab that addresses these limitations. The device provides extremely large dispersion with a widely tunable spectrum. We also propose a new time-stretch spectrometer where the absorption cell simultaneously provides spectrum-to-time mapping for fast single-shot spectroscopy.

© 2021 Optical Society of America

Giant tunable optical dispersion using chromo-modal excitation of a multimode waveguide

Eric D. Diebold, Nick K. Hon, Zhongwei Tan, Jason Chou, Todd Sienicki, Chao Wang, and Bahram Jalali
Opt. Express 19(24) 23809-23817 (2011)

Stretch tuning of dispersion in optical microfibers

Keying Liu, Yuhang Li, Mingjin Gao, Jianbin Zhang, Peizhen Xu, Xin Guo, Qiang Liu, and Limin Tong
Opt. Lett. 49(4) 895-898 (2024)

Temporally structured illumination for ultrafast time-stretch microscopy

Yuhua Duan, Xin Dong, Ningning Yang, Chi Zhang, Kenneth K. Y. Wong, and Xinliang Zhang
Opt. Lett. 44(19) 4634-4637 (2019)

Calibration-free time-stretch optical coherence tomography with large imaging depth

Lei Zhang, Liao Chen, Zihui Lei, Yuhua Duan, Chi Zhang, and Xinliang Zhang
Opt. Lett. 44(17) 4135-4138 (2019)

Time-resolved dual-comb spectroscopy with a single electro-optic modulator

Jeong Hyun Huh, Zaijun Chen, Edoardo Vicentini, Theodor W. Hänsch, and Nathalie Picqué
Opt. Lett. 46(16) 3957-3960 (2021)