Silicon-based flat-topped wavelength filter for low crosstalk, high fabrication tolerance and wideband operating range for CWDM applications

被引：3

作者：

Jeong, Seok-Hwan ^{[1
]}

机构：

[1] Univ Suwon, Dept Elect Mat Engn, Hwaseong 18323, South Korea

来源：

OPTICAL AND QUANTUM ELECTRONICS | 2022年 / 54卷 / 09期

关键词：

Guided optics; Photonic waveguide; Wavelength filter; Multiplexer; Demultiplexer; Silicon photonics; COUPLERS; DEMULTIPLEXERS; PHOTONICS; WDM;

D O I：

10.1007/s11082-022-03934-y

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A flat-topped wavelength filter with low crosstalk and high productivity is proposed and theoretically analyzed. The proposed filter scheme is composed of multiple cascade-connected delayed interferometers with several multimode interference couplers with 50:50 and 28:72 split ratios and a directional coupler with a 92:8 split ratio. Theoretical results based on analytic and numerical simulations exhibit flatband spectra over a wavelength range of > 100 nm and low crosstalk of < -20 [dB] with potentially better production yield for fabrication imperfections.

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页数：14

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