Broadband Polarization Beam Splitter by Using Cascaded Tapered Bent Directional Couplers
We propose and demonstrate a broadband silicon-based polarization beam splitter (PBS) by using cascaded tapered bent directional couplers (DCs). In our device, the TM-polarized light is efficiently cross coupled to the cross port due to the strong coupling in the DCs, while the TE-polarized light go...
| Published in: | IEEE Photonics Journal |
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| Main Authors: | , , , , |
| Format: | Article |
| Language: | English |
| Published: |
IEEE
2019-01-01
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| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/8731638/ |
| _version_ | 1849442371835527168 |
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| author | Ning Zhao Ciyuan Qiu Yu He Yong Zhang Yikai Su |
| author_facet | Ning Zhao Ciyuan Qiu Yu He Yong Zhang Yikai Su |
| author_sort | Ning Zhao |
| collection | DOAJ |
| container_title | IEEE Photonics Journal |
| description | We propose and demonstrate a broadband silicon-based polarization beam splitter (PBS) by using cascaded tapered bent directional couplers (DCs). In our device, the TM-polarized light is efficiently cross coupled to the cross port due to the strong coupling in the DCs, while the TE-polarized light goes through the DC with weak coupling and outputs at the through port. This device can achieve a broad bandwidth performance and support <italic>O</italic>-, <italic>S</italic>-, <italic>C</italic>-, and <italic>L</italic>-band operations, with acceptable extinction ratios (ERs) and insertion losses (ILs). For both TE and TM polarizations, the simulation results show that ERs are ≥10.1 dB and ILs are ≤1.33 dB in 1280–1600 nm. In the measurement, for the TE polarization, an ER ≥10.94 dB and an IL ≤1.61 dB are obtained in 1280–1360 nm, while an ER ≥11.98 dB and an IL ≤1.39 dB are measured in 1510–1590 nm. For the TM polarization, an ER ≥12.25 dB and an IL ≤2.22 dB are obtained in 1280–1360 nm, while an ER ≥18.93 dB and an IL ≤1.22 dB are measured in 1510–1590 nm. |
| format | Article |
| id | doaj-art-2cffdb280d0f4eb8864c0cc560e0bbf4 |
| institution | Directory of Open Access Journals |
| issn | 1943-0655 |
| language | English |
| publishDate | 2019-01-01 |
| publisher | IEEE |
| record_format | Article |
| spelling | doaj-art-2cffdb280d0f4eb8864c0cc560e0bbf42025-08-20T03:32:33ZengIEEEIEEE Photonics Journal1943-06552019-01-011141810.1109/JPHOT.2019.29209098731638Broadband Polarization Beam Splitter by Using Cascaded Tapered Bent Directional CouplersNing Zhao0Ciyuan Qiu1https://orcid.org/0000-0001-7093-8924Yu He2https://orcid.org/0000-0001-8983-4949Yong Zhang3https://orcid.org/0000-0003-4857-8031Yikai Su4https://orcid.org/0000-0002-1526-8187State Key Laboratory of Advanced Optical Communication Systems and Networks, Department of Electronic Engineering, Shanghai Jiao Tong University, Shanghai, ChinaState Key Laboratory of Advanced Optical Communication Systems and Networks, Department of Electronic Engineering, Shanghai Jiao Tong University, Shanghai, ChinaState Key Laboratory of Advanced Optical Communication Systems and Networks, Department of Electronic Engineering, Shanghai Jiao Tong University, Shanghai, ChinaState Key Laboratory of Advanced Optical Communication Systems and Networks, Department of Electronic Engineering, Shanghai Jiao Tong University, Shanghai, ChinaState Key Laboratory of Advanced Optical Communication Systems and Networks, Department of Electronic Engineering, Shanghai Jiao Tong University, Shanghai, ChinaWe propose and demonstrate a broadband silicon-based polarization beam splitter (PBS) by using cascaded tapered bent directional couplers (DCs). In our device, the TM-polarized light is efficiently cross coupled to the cross port due to the strong coupling in the DCs, while the TE-polarized light goes through the DC with weak coupling and outputs at the through port. This device can achieve a broad bandwidth performance and support <italic>O</italic>-, <italic>S</italic>-, <italic>C</italic>-, and <italic>L</italic>-band operations, with acceptable extinction ratios (ERs) and insertion losses (ILs). For both TE and TM polarizations, the simulation results show that ERs are ≥10.1 dB and ILs are ≤1.33 dB in 1280–1600 nm. In the measurement, for the TE polarization, an ER ≥10.94 dB and an IL ≤1.61 dB are obtained in 1280–1360 nm, while an ER ≥11.98 dB and an IL ≤1.39 dB are measured in 1510–1590 nm. For the TM polarization, an ER ≥12.25 dB and an IL ≤2.22 dB are obtained in 1280–1360 nm, while an ER ≥18.93 dB and an IL ≤1.22 dB are measured in 1510–1590 nm.https://ieeexplore.ieee.org/document/8731638/Polarization beam splitterdirectional couplertapered waveguide |
| spellingShingle | Ning Zhao Ciyuan Qiu Yu He Yong Zhang Yikai Su Broadband Polarization Beam Splitter by Using Cascaded Tapered Bent Directional Couplers Polarization beam splitter directional coupler tapered waveguide |
| title | Broadband Polarization Beam Splitter by Using Cascaded Tapered Bent Directional Couplers |
| title_full | Broadband Polarization Beam Splitter by Using Cascaded Tapered Bent Directional Couplers |
| title_fullStr | Broadband Polarization Beam Splitter by Using Cascaded Tapered Bent Directional Couplers |
| title_full_unstemmed | Broadband Polarization Beam Splitter by Using Cascaded Tapered Bent Directional Couplers |
| title_short | Broadband Polarization Beam Splitter by Using Cascaded Tapered Bent Directional Couplers |
| title_sort | broadband polarization beam splitter by using cascaded tapered bent directional couplers |
| topic | Polarization beam splitter directional coupler tapered waveguide |
| url | https://ieeexplore.ieee.org/document/8731638/ |
| work_keys_str_mv | AT ningzhao broadbandpolarizationbeamsplitterbyusingcascadedtaperedbentdirectionalcouplers AT ciyuanqiu broadbandpolarizationbeamsplitterbyusingcascadedtaperedbentdirectionalcouplers AT yuhe broadbandpolarizationbeamsplitterbyusingcascadedtaperedbentdirectionalcouplers AT yongzhang broadbandpolarizationbeamsplitterbyusingcascadedtaperedbentdirectionalcouplers AT yikaisu broadbandpolarizationbeamsplitterbyusingcascadedtaperedbentdirectionalcouplers |