Non-reciprocal response in silicon photonic resonators integrated with 2D CuCrP<sub>2</sub>S<sub>6</sub> at short-wave infrared

Ghada Dushaq; Solomon Serunjogi; Srinivasa R. Tamalampudi; Mahmoud Rasras

doi:10.1038/s41377-025-01826-w

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Non-reciprocal response in silicon photonic resonators integrated with 2D CuCrP₂S₆ at short-wave infrared

Original Articles

- Non-reciprocal response in silicon photonic resonators integrated with 2D CuCrP₂S₆ at short-wave infrared
- Non-reciprocal response in silicon photonic resonators integrated with 2D CuCrP₂S₆ at short-wave infrared
- LSA 2025年14卷第6期页码：1581-1593
- Affiliations：
  
  1.Department of Electrical and Computer Engineering, New York University Abu Dhabi, P.O. Box 129188, Abu Dhabi, UAE
  2.NYU Tandon School of Engineering, New York University, Brooklyn, NY, USA
- Author bio：
  
  Ghada Dushaq (ghd1@nyu.edu)
  Mahmoud Rasras (mr5098@nyu.edu)
- Funds：
- DOI：10.1038/s41377-025-01826-w
  中图分类号：
- 收稿日期：2024-08-02，
  
  修回日期：2025-03-06，
  
  录用日期：2025-03-13，
  
  网络出版日期：2025-04-09，
  
  纸质出版日期：2025-06-30
- Accepted：
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Non-reciprocal response in silicon photonic resonators integrated with 2D CuCrP₂S₆ at short-wave infrared[J]. LSA, 2025,14(6):1581-1593.

Dushaq, G. et al. Non-reciprocal response in silicon photonic resonators integrated with 2D CuCrP₂S₆ at short-wave infrared. Light: Science & Applications, 14, 1581-1593 (2025).
Non-reciprocal response in silicon photonic resonators integrated with 2D CuCrP₂S₆ at short-wave infrared[J]. LSA, 2025,14(6):1581-1593. DOI： 10.1038/s41377-025-01826-w.

Dushaq, G. et al. Non-reciprocal response in silicon photonic resonators integrated with 2D CuCrP₂S₆ at short-wave infrared. Light: Science & Applications, 14, 1581-1593 (2025). DOI： 10.1038/s41377-025-01826-w.

摘要

Abstract

Achieving non-reciprocal optical behavior in integrated photonics with high efficiency has long been a challenge. Here

we demonstrate a non-reciprocal magneto-optic response by integrating multilayer 2D CuCrP

(CCPS) onto silicon microring resonators (MRRs). Under an applied magnetic field

the CCPS intralayer ferromagnetic ordering

characterized by easy-plane magneto-crystalline anisotropy

induces asymmetrical modal responses in the clockwise (CW) and counterclockwise (CCW) light propagation directions. The proposed configuration achieves a low insertion loss ranging from 0.15 dB to 1.8 dB and a high isolation ratio of 28 dB at 1550 nm. Notably

it exhibits a significant resonance wavelength splitting of 0.4 nm between the counter propagation directions

supporting a 50 GHz optical bandwidth. Operating directly in the transverse electric (TE) mode

it aligns with the main polarization used in silicon photonics circuits

eliminating the need for additional polarization management. The device is ultra-compact

with a 2D flake interaction length ranging fro

m 22 µm to 55 µm and a thickness between 39 nm and 62 nm. Its operation range covers the entire C-band with a bandwidth of up to 100 nm. These attributes make our hybrid CCPS/Si device ideal for advanced non-reciprocal optical applications in the short-wave infrared (SWIR) spectrum

crucial for enhancing the resilience of optical systems against back-reflections.

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Non-reciprocal response in silicon photonic resonators integrated with 2D CuCrP2S6 at short-wave infrared

Non-reciprocal response in silicon photonic resonators integrated with 2D CuCrP2S6 at short-wave infrared

DOI：10.1038/s41377-025-01826-w

摘要

Abstract

关键词

Keywords

references

Non-reciprocal response in silicon photonic resonators integrated with 2D CuCrP₂S₆ at short-wave infrared

Non-reciprocal response in silicon photonic resonators integrated with 2D CuCrP₂S₆ at short-wave infrared