基于 LNOI 紧凑型多模干扰的宽带 MIMO 全光单元转换器。

IF 3.3 2区物理与天体物理 Q2 OPTICS

Optics letters Pub Date : 2025-02-01 DOI:10.1364/OL.546350

Shun Wang, Daixin Lian, Yongqi Ye, Shi Zhao, Jingye Chen, Daoxin Dai, Yaocheng Shi

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引用次数: 0

摘要

我们在绝缘体上铌酸锂（LNOI）平台上提出并演示了一种基于非均匀多模干涉（nMMI-OUC）的可重构4 × 4多输入多输出（MIMO）全光单一转换器（OUC），该转换器具有宽带运行、紧凑、低损耗和易于制造的优点。为了提高带宽，采用紧凑型非均匀多模干扰代替均匀多模干扰，实现了相同的串扰和更大的带宽。与基于均匀多模干涉的OUC （uMMI-OUC）相比，使用nmi -OUC的耦合器只有一半的长度。实验结果表明，nMMI-OUC在100 nm （1520 ~ 1620 nm）波长范围内实现了可重构四模解复用，波长相关损耗小于3 dB，串扰小于-17.3 dB，在1550 nm波长处实现了~ 0.21 dB/耦合器。

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Broadband MIMO all-optical unitary converter based on compact multimode interference on LNOI.

We propose and demonstrate a reconfigurable 4 × 4 multi-input multi-output (MIMO) all-optical unitary converter (OUC) based on non-uniform multimode interference (nMMI-OUC) on a lithium-niobate-on-insulator (LNOI) platform, which has the advantages of broadband operation, compactness, low loss, and fabrication-friendliness. To enhance the bandwidth, compact non-uniform multimode interference is utilized to replace uniform multimode interference, achieving the same cross talk and larger bandwidth. Compared with OUC based on uniform multimode interference (uMMI-OUC), the couplers using nMMI-OUC are only half length. The experimental results show that the reconfigurable four mode demultiplexing have been realized with wavelength-dependent loss of less than 3 dB and cross talk of less than -17.3 dB over 100 nm (from 1520 nm to 1620 nm) wavelength range and ∼0.21 dB/coupler at 1550 nm wavelength for nMMI-OUC.

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来源期刊

Optics letters 物理-光学

CiteScore

6.60

自引率

8.30%

发文量

2275

审稿时长

1.7 months

期刊介绍： The Optical Society (OSA) publishes high-quality, peer-reviewed articles in its portfolio of journals, which serve the full breadth of the optics and photonics community. Optics Letters offers rapid dissemination of new results in all areas of optics with short, original, peer-reviewed communications. Optics Letters covers the latest research in optical science, including optical measurements, optical components and devices, atmospheric optics, biomedical optics, Fourier optics, integrated optics, optical processing, optoelectronics, lasers, nonlinear optics, optical storage and holography, optical coherence, polarization, quantum electronics, ultrafast optical phenomena, photonic crystals, and fiber optics. Criteria used in determining acceptability of contributions include newsworthiness to a substantial part of the optics community and the effect of rapid publication on the research of others. This journal, published twice each month, is where readers look for the latest discoveries in optics.