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15 February 2018Broadband temperature-insensitivity of dispersion-engineered waveguides and resonators
Lijuan Xu,1,2 Liuqing He,1 Yuhao Guo,1 Guifang Li,1,3 Lin Zhang1
1Tianjin Univ. (China) 2Tianjin Univ. of Technology and Education (China) 3CREOL, The College of Optics and Photonics, Univ. of Central Florida (United States)
Photonic circuits suffer from thermal drift of device performance, which is a key obstacle to the development of commercial optoelectronic products. Temperature-insensitive integrated waveguides and resonators have been demonstrated by using materials with a negative TOC at a single wavelength, which are not suitable for WDM devices and wideband nonlinear devices. Here, we propose a waveguide structure with temperature-insensitivity over a bandwidth of 780 nm (1280 to 2060 nm) with an ultra-small effective TOC within ±1×10-6/K. Uniquely, the waveguide has small anomalous dispersion (from 66 to 329 ps/nm/km) over the same band and is suitable for frequency comb generation without being affected by intra-cavity thermal dynamics.
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Lijuan Xu, Liuqing He, Yuhao Guo, Guifang Li, Lin Zhang, "Broadband temperature-insensitivity of dispersion-engineered waveguides and resonators," Proc. SPIE 10516, Nonlinear Frequency Generation and Conversion: Materials and Devices XVII, 105161G (15 February 2018); https://doi.org/10.1117/12.2291333