Athermal waveguides and resonators with three zero-thermal-drift wavelengths

IF 1.1 4区 物理与天体物理 Q4 NANOSCIENCE & NANOTECHNOLOGY
Peishan Han, Liuqing He, Lijuan Xu, Lin Zhang
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引用次数: 0

Abstract

Microresonators have been extensively studied in integrated photonics over the past two decades. However, the thermal frequency drift of a resonator limits its applications in practice. Athermal microresonators, as a passive solution, have become highly attractive. We propose two types of broadband athermal waveguides, with three zero-thermal-drift wavelengths achieved through mode anti-crossing effect, for the first time. For the polymer-coated waveguide, the effective thermo-optical coefficient (TOC) has a variation of ±1.5×10−6/K from 1350 to 1790 nm. For the TiO2-coated waveguide, the effective TOC has a variation of ±1.5×10−6/K from 1510 to 2090 nm. Over such a wide band of 440 or 580 nm, both the athermal microring resonators show excellent athermal property of <1 pm/K. The broadband athermal characteristics of the resonators would enable a wide variety of applications, e.g., wavelength-division multiplexing filters, modulators, lasers, sensors, and nonlinear optical sources.
具有三个零热漂移波长的热波导和谐振器
在过去的二十年里,集成光子学领域对微谐振器进行了广泛的研究。然而,谐振器的热频漂移限制了其在实际中的应用。作为一种无源解决方案,热敏微谐振器变得极具吸引力。我们首次提出了两种宽带热波导,通过模式反交叉效应实现了三个零热漂移波长。对于聚合物涂层波导,有效热光学系数(TOC)在 1350 至 1790 nm 范围内的变化为 ±1.5×10-6/K。对于二氧化钛涂层波导,有效热光学系数在 1510 至 2090 纳米波长范围内的变化为 ±1.5×10-6/K。在波长为 440 或 580 nm 的宽波段内,两种热微孔谐振器都显示出小于 1 pm/K 的优异热特性。这种谐振器的宽带热特性可用于多种领域,如波分复用滤波器、调制器、激光器、传感器和非线性光源。
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来源期刊
Journal of Nanophotonics
Journal of Nanophotonics 工程技术-光学
CiteScore
2.60
自引率
6.70%
发文量
42
审稿时长
3 months
期刊介绍: The Journal of Nanophotonics publishes peer-reviewed papers focusing on the fabrication and application of nanostructures that facilitate the generation, propagation, manipulation, and detection of light from the infrared to the ultraviolet regimes.
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