التفاصيل البيبلوغرافية
| العنوان: |
Polarization-independent tunable optical filter with variable bandwidth based on silicon-on-insulator waveguides |
| المؤلفون: |
Wang Haoyan, Dai Jincheng, Jia Hao, Shao Sizhu, Fu Xin, Zhang Lei, Yang Lin |
| المصدر: |
Nanophotonics, Vol 7, Iss 8, Pp 1469-1477 (2018) |
| بيانات النشر: |
De Gruyter, 2018. |
| سنة النشر: |
2018 |
| المجموعة: |
LCC:Physics |
| مصطلحات موضوعية: |
tunable filter, polarization diversity, microring resonator, silicon photonics, (130.3120) integrated optics devices, (130.7408) wavelength filtering devices, (140.4780) optical resonators, Physics, QC1-999 |
| الوصف: |
We present a polarization-independent tunable optical filter with variable bandwidth based on silicon-on-insulator (SOI) waveguides. The polarization-independent operation is achieved through the use of a polarization splitter-rotator and a polarization rotator-combiner, which are based on a bilevel adiabatic taper and an asymmetric directional coupler. Two stages of second-order microring resonators (MRRs) with different radii are used to achieve wavelength filtering with variable bandwidth and large free spectral range (FSR). Each stage of the second-order MRRs has a flat-top spectrum. The central wavelength of the filter is tuned by synchronous tuning of the two stages. The 3 dB bandwidth is adjusted via intentional misalignment of the passbands of the two stages. We demonstrate a prototype of such an optical filter on the SOI platform. The FSR of the fabricated device is about 90 nm. We show the tuning of the central wavelength from 1460 to 1550 nm. We adjust the 3 dB bandwidth from 37.5 to 100 GHz with a step of 12.5 GHz, with the overall insertion loss varying from −5.4 to −7.9 dB. |
| نوع الوثيقة: |
article |
| وصف الملف: |
electronic resource |
| اللغة: |
English |
| تدمد: |
2192-8614 |
| Relation: |
http://www.degruyter.com/view/j/nanoph.2018.7.issue-8/nanoph-2018-0058/nanoph-2018-0058.xml?format=INT; https://doaj.org/toc/2192-8614 |
| DOI: |
10.1515/nanoph-2018-0058 |
| URL الوصول: |
https://doaj.org/article/495e344597d6482fa752b3f67682c865 |
| رقم الانضمام: |
edsdoj.495e344597d6482fa752b3f67682c865 |
| قاعدة البيانات: |
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