15 February 2018 Broadband temperature-insensitivity of dispersion-engineered waveguides and resonators
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Abstract
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); doi: 10.1117/12.2291333; https://doi.org/10.1117/12.2291333
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