Bandwidth-Variable and Wavelength-Tunable Waveguide Bragg Grating Filter

IF 2.1 4区工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Photonics Journal Pub Date : 2025-06-02 DOI:10.1109/JPHOT.2025.3576075

Luyao Xie;Lawrence R. Chen

引用次数: 0

Abstract

We propose and demonstrate a waveguide Bragg grating filter that is bandwidth-variable and wavelength-tunable. The filter is implemented using a pair of apodized waveguide Bragg gratings in silicon-on-insulator that are tuned thermally. The bandwidth-variable functionally is achieved by tuning one of the two gratings while holding the other fixed; the corresponding 3 dB bandwidth of the passband can be varied from 2.28 nm to 7.39 nm. For the wavelength tunable filter, the center wavelength can be tuned from 1546.21 nm to 1549.57 nm while maintaining a passband bandwidth of 4.20 nm, or to be tuned from 1556.68 nm to 1562.56 nm while maintaining a passband bandwidth of 2.60 nm. A stopband response can also be wavelength tuned while conserving a 3 dB bandwidth of 5.70 nm. The wavelength tunability is achieved by tuning the two gratings simultaneously.

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带宽可变和波长可调波导布拉格光栅滤波器

我们提出并演示了一种带宽可变和波长可调的波导布拉格光栅滤波器。该滤波器采用一对经热调谐的绝缘体上硅波导布拉格光栅来实现。带宽变量在功能上是通过调整两个光栅中的一个而保持另一个固定来实现的；相应的通带3db带宽可以在2.28 nm到7.39 nm之间变化。对于波长可调滤波器，中心波长可从1546.21 nm调谐到1549.57 nm，同时保持4.20 nm的通带带宽，或可从1556.68 nm调谐到1562.56 nm，同时保持2.60 nm的通带带宽。阻带响应也可以进行波长调谐，同时保留5.70 nm的3db带宽。波长可调谐性是通过同时调谐两个光栅来实现的。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

IEEE Photonics Journal ENGINEERING, ELECTRICAL & ELECTRONIC-OPTICS

CiteScore

4.50

自引率

8.30%

发文量

489

审稿时长

1.4 months

期刊介绍： Breakthroughs in the generation of light and in its control and utilization have given rise to the field of Photonics, a rapidly expanding area of science and technology with major technological and economic impact. Photonics integrates quantum electronics and optics to accelerate progress in the generation of novel photon sources and in their utilization in emerging applications at the micro and nano scales spanning from the far-infrared/THz to the x-ray region of the electromagnetic spectrum. IEEE Photonics Journal is an online-only journal dedicated to the rapid disclosure of top-quality peer-reviewed research at the forefront of all areas of photonics. Contributions addressing issues ranging from fundamental understanding to emerging technologies and applications are within the scope of the Journal. The Journal includes topics in: Photon sources from far infrared to X-rays, Photonics materials and engineered photonic structures, Integrated optics and optoelectronic, Ultrafast, attosecond, high field and short wavelength photonics, Biophotonics, including DNA photonics, Nanophotonics, Magnetophotonics, Fundamentals of light propagation and interaction; nonlinear effects, Optical data storage, Fiber optics and optical communications devices, systems, and technologies, Micro Opto Electro Mechanical Systems (MOEMS), Microwave photonics, Optical Sensors.