Silicon-Nanowire-Type Polarization-Diversified CWDM Demultiplexer for Low Polarization Crosstalk
Coarse wavelength division multiplexing (CWDM)-targeted novel silicon (Si)-nanowire-type polarization-diversified optical demultiplexers were numerically analyzed and experimentally verified. The optical demultiplexer comprised a hybrid mode conversion-type polarization splitter rotator (PSR) and a...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-08-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/13/16/2382 |
| _version_ | 1797583631633350656 |
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| author | Seok-Hwan Jeong Heuk Park Joon Ki Lee |
| author_facet | Seok-Hwan Jeong Heuk Park Joon Ki Lee |
| author_sort | Seok-Hwan Jeong |
| collection | DOAJ |
| description | Coarse wavelength division multiplexing (CWDM)-targeted novel silicon (Si)-nanowire-type polarization-diversified optical demultiplexers were numerically analyzed and experimentally verified. The optical demultiplexer comprised a hybrid mode conversion-type polarization splitter rotator (PSR) and a delayed Mach–Zehnder interferometric demultiplexer. Si-nanowire-based devices were fabricated using a commercially available Si photonics foundry process, exhibiting nearly identical spectral responses regardless of the polarization states of the input signals under the PSR. The experiment demonstrated a low insertion loss of 1.0 dB and a polarization-dependent loss of 1.0 dB, effectively suppressing spectral crosstalk from other channels by less than −15 dB. Furthermore, a TM-mode rejection-filter-integrated optical demultiplexer was designed and experimentally validated to mitigate unwanted TM-mode-related polarization crosstalk that arose from the PSR. It exhibited an improved polarization crosstalk rejection efficiency of −25 dB to −50 dB within the whole CWDM spectral range. |
| first_indexed | 2024-03-10T23:40:37Z |
| format | Article |
| id | doaj.art-82eb9515d826472889309049a9f08110 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-10T23:40:37Z |
| publishDate | 2023-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-82eb9515d826472889309049a9f081102023-11-19T02:28:21ZengMDPI AGNanomaterials2079-49912023-08-011316238210.3390/nano13162382Silicon-Nanowire-Type Polarization-Diversified CWDM Demultiplexer for Low Polarization CrosstalkSeok-Hwan Jeong0Heuk Park1Joon Ki Lee2Department of Electronic Materials Engineering, The University of Suwon, Hwaseong 18323, Republic of KoreaElectronics and Telecommunications Research Institute (ETRI), Daejeon 34129, Republic of KoreaElectronics and Telecommunications Research Institute (ETRI), Daejeon 34129, Republic of KoreaCoarse wavelength division multiplexing (CWDM)-targeted novel silicon (Si)-nanowire-type polarization-diversified optical demultiplexers were numerically analyzed and experimentally verified. The optical demultiplexer comprised a hybrid mode conversion-type polarization splitter rotator (PSR) and a delayed Mach–Zehnder interferometric demultiplexer. Si-nanowire-based devices were fabricated using a commercially available Si photonics foundry process, exhibiting nearly identical spectral responses regardless of the polarization states of the input signals under the PSR. The experiment demonstrated a low insertion loss of 1.0 dB and a polarization-dependent loss of 1.0 dB, effectively suppressing spectral crosstalk from other channels by less than −15 dB. Furthermore, a TM-mode rejection-filter-integrated optical demultiplexer was designed and experimentally validated to mitigate unwanted TM-mode-related polarization crosstalk that arose from the PSR. It exhibited an improved polarization crosstalk rejection efficiency of −25 dB to −50 dB within the whole CWDM spectral range.https://www.mdpi.com/2079-4991/13/16/2382silicon-nanowire waveguideoptical filteroptical demultiplexerpolarization controlO-bandcoarse wavelength division multiplexing |
| spellingShingle | Seok-Hwan Jeong Heuk Park Joon Ki Lee Silicon-Nanowire-Type Polarization-Diversified CWDM Demultiplexer for Low Polarization Crosstalk Nanomaterials silicon-nanowire waveguide optical filter optical demultiplexer polarization control O-band coarse wavelength division multiplexing |
| title | Silicon-Nanowire-Type Polarization-Diversified CWDM Demultiplexer for Low Polarization Crosstalk |
| title_full | Silicon-Nanowire-Type Polarization-Diversified CWDM Demultiplexer for Low Polarization Crosstalk |
| title_fullStr | Silicon-Nanowire-Type Polarization-Diversified CWDM Demultiplexer for Low Polarization Crosstalk |
| title_full_unstemmed | Silicon-Nanowire-Type Polarization-Diversified CWDM Demultiplexer for Low Polarization Crosstalk |
| title_short | Silicon-Nanowire-Type Polarization-Diversified CWDM Demultiplexer for Low Polarization Crosstalk |
| title_sort | silicon nanowire type polarization diversified cwdm demultiplexer for low polarization crosstalk |
| topic | silicon-nanowire waveguide optical filter optical demultiplexer polarization control O-band coarse wavelength division multiplexing |
| url | https://www.mdpi.com/2079-4991/13/16/2382 |
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