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Polymer waveguide tunable transceiver for photonic front-end in the 5G wireless network
Photonics Research ( IF 7.6 ) Pub Date : 2021-01-26 , DOI: 10.1364/prj.411137
Tae-Hyun Park , Sung-Moon Kim , Eun-Su Lee , Min-Cheol Oh

A photonic front-end in the 5G wireless network based on wavelength-division multiplexing optical communication requires low-cost tunable transceivers. By exploiting polymer waveguide Bragg-grating technology, we propose a tunable transceiver consisting of an external cavity tunable laser and a tilted grating tunable filter. In particular, a double-reflection tunable filter provides narrower reflection bandwidth and suppresses undesired mode coupling, improving the side-mode suppression ratio (SMSR) and reducing adjacent-channel crosstalk. By introducing perfluorinated polymers with low birefringence, polarization independence, which is a prerequisite for wavelength filter elements, is secured, and 20 dB bandwidth of 0.69 nm, wavelength tunability over 40 nm, and SMSR of 42 dB are achieved.

中文翻译:

用于5G无线网络中光子前端的聚合物波导可调收发器

基于波分复用光通信的5G无线网络中的光子前端需要低成本的可调收发器。通过利用聚合物波导布拉格光栅技术,我们提出了一种可调收发器,该收发器由外腔可调激光器和倾斜光栅可调滤波器组成。特别是,双反射可调滤波器提供了更窄的反射带宽,并抑制了不希望的模式耦合,从而改善了旁模抑制比(SMSR),并减少了相邻通道的串扰。通过引入具有低双折射的全氟化聚合物,可以确保偏振独立性,这是波长滤光器元件的先决条件,并实现了0.69 nm的20 dB带宽,超过40 nm的波长可调性和42 dB的SMSR。
更新日期:2021-02-01
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