Fano Resonance Thermo-Optic Modulator Based on Double T-Bus Waveguides-Coupled Micro-Ring Resonator

Li, Hongpeng; Lu, Lidan; Chen, Guang; Wang, Shuai; Ou, Jianzhen; Zhu, Lianqing

doi:10.3390/photonics11030255

Open AccessArticle

Fano Resonance Thermo-Optic Modulator Based on Double T-Bus Waveguides-Coupled Micro-Ring Resonator

by

Hongpeng Li

^1,2,

Lidan Lu

^1,2,*,

Guang Chen

^1,2

,

Shuai Wang

^1,2,

Jianzhen Ou

³

and

Lianqing Zhu

^1,2,*

¹

Key Laboratory of the Ministry of Education for Optoelectronic Measurement Technology and Instrument, Beijing Information Science & Technology University, Beijing 100192, China

²

Guangzhou Nansha Intelligent Photonic Sensing Research Institute, Guangzhou 511462, China

³

School of Engineering, RMIT University, Melbourne, VIC 3001, Australia

^*

Authors to whom correspondence should be addressed.

Photonics 2024, 11(3), 255; https://doi.org/10.3390/photonics11030255

Submission received: 30 January 2024 / Revised: 24 February 2024 / Accepted: 11 March 2024 / Published: 12 March 2024

(This article belongs to the Special Issue Integrated Waveguide-Based Photonic Devices)

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Abstract

For the silicon optical computing chip, the optical convolution unit based on the micro-ring modulator has been demonstrated to have high integration and large computing density. To further reduce power consumption, a novel, simple Fano resonant thermo-optic modulator is presented with numerical simulation and experimental demonstration. This designed Fano resonator comprises double T-shaped waveguides and a micro-ring with a radius of 10 μm. Compared with the free use of bus waveguides, our double T-shaped waveguides generate a phase shift, along with a Fano-like line shape. The experimental results show that the resonant wavelength shift of the designed modulator is 2.4 nm with a driven power of 20 mW. In addition, the maximum spectral resolution and the extinction ratio are 70.30 dB/nm and 12.69 dB, respectively. For our thermo-optic modulator, the optical intensity power consumption sensitivity of 7.60 dB/mW is three times as large as that of the micro-ring modulator. This work has broad potential to provide a low-power-consumption essential component for large-scale on-chip modulation for optical computing with compatible metal oxygen semiconductor processes.

Keywords: thermo-optic modulator; Fano resonance; micro-ring resonator; optical computing

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MDPI and ACS Style

Li, H.; Lu, L.; Chen, G.; Wang, S.; Ou, J.; Zhu, L. Fano Resonance Thermo-Optic Modulator Based on Double T-Bus Waveguides-Coupled Micro-Ring Resonator. Photonics 2024, 11, 255. https://doi.org/10.3390/photonics11030255

AMA Style

Li H, Lu L, Chen G, Wang S, Ou J, Zhu L. Fano Resonance Thermo-Optic Modulator Based on Double T-Bus Waveguides-Coupled Micro-Ring Resonator. Photonics. 2024; 11(3):255. https://doi.org/10.3390/photonics11030255

Chicago/Turabian Style

Li, Hongpeng, Lidan Lu, Guang Chen, Shuai Wang, Jianzhen Ou, and Lianqing Zhu. 2024. "Fano Resonance Thermo-Optic Modulator Based on Double T-Bus Waveguides-Coupled Micro-Ring Resonator" Photonics 11, no. 3: 255. https://doi.org/10.3390/photonics11030255

APA Style

Li, H., Lu, L., Chen, G., Wang, S., Ou, J., & Zhu, L. (2024). Fano Resonance Thermo-Optic Modulator Based on Double T-Bus Waveguides-Coupled Micro-Ring Resonator. Photonics, 11(3), 255. https://doi.org/10.3390/photonics11030255

Note that from the first issue of 2016, this journal uses article numbers instead of page numbers. See further details here.

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Fano Resonance Thermo-Optic Modulator Based on Double T-Bus Waveguides-Coupled Micro-Ring Resonator

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