All-Optical Tunable Filter With a Graphene-Buried Long-Period Waveguide Grating
We demonstrate low-power all-optical tunable filters with long-period gratings formed in graphene-buried polymer waveguides, where the heat generated by graphene's absorption of the TE-polarized pump light serves to tune the TM-polarized resonance band. Our experimental gratings designed...
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IEEE
2023-01-01
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| Series: | IEEE Photonics Journal |
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| Online Access: | https://ieeexplore.ieee.org/document/10168983/ |
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| author | Lianzhong Jiang Wenfan Jiang Kin Seng Chiang |
| author_facet | Lianzhong Jiang Wenfan Jiang Kin Seng Chiang |
| author_sort | Lianzhong Jiang |
| collection | DOAJ |
| description | We demonstrate low-power all-optical tunable filters with long-period gratings formed in graphene-buried polymer waveguides, where the heat generated by graphene's absorption of the TE-polarized pump light serves to tune the TM-polarized resonance band. Our experimental gratings designed for operation at ∼1550 nm and pumped at 980 nm, which contain ∼6-mm long graphene, achieve a tuning efficiency of approximately –0.7 nm/mW, which corresponds to a ∼20-nm blue shift in the resonance wavelength with a pump power lower than ∼30 mW. Our grating can also serve as an all-optical switch when operated at a fixed wavelength, which can provide an extinction ratio larger than 20 dB with a pump power lower than 30 mW at a response time of ∼2.0 ms. The graphene-buried grating platform can be further explored for the development of a wide range of all-optical control devices. |
| format | Article |
| id | doaj-art-fd42bbe60e114321b09cd175ed0fd0fd |
| institution | DOAJ |
| issn | 1943-0655 |
| language | English |
| publishDate | 2023-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Photonics Journal |
| spelling | doaj-art-fd42bbe60e114321b09cd175ed0fd0fd2025-08-20T02:41:52ZengIEEEIEEE Photonics Journal1943-06552023-01-011541610.1109/JPHOT.2023.329092110168983All-Optical Tunable Filter With a Graphene-Buried Long-Period Waveguide GratingLianzhong Jiang0https://orcid.org/0000-0002-8818-3205Wenfan Jiang1Kin Seng Chiang2https://orcid.org/0000-0002-8227-7905Department of Electrical Engineering, City University of Hong Kong, Hong Kong, ChinaDepartment of Electrical Engineering, City University of Hong Kong, Hong Kong, ChinaDepartment of Electrical Engineering, City University of Hong Kong, Hong Kong, ChinaWe demonstrate low-power all-optical tunable filters with long-period gratings formed in graphene-buried polymer waveguides, where the heat generated by graphene's absorption of the TE-polarized pump light serves to tune the TM-polarized resonance band. Our experimental gratings designed for operation at ∼1550 nm and pumped at 980 nm, which contain ∼6-mm long graphene, achieve a tuning efficiency of approximately –0.7 nm/mW, which corresponds to a ∼20-nm blue shift in the resonance wavelength with a pump power lower than ∼30 mW. Our grating can also serve as an all-optical switch when operated at a fixed wavelength, which can provide an extinction ratio larger than 20 dB with a pump power lower than 30 mW at a response time of ∼2.0 ms. The graphene-buried grating platform can be further explored for the development of a wide range of all-optical control devices.https://ieeexplore.ieee.org/document/10168983/All-optical tunable filtergraphenelong-period gratingpolymer waveguide |
| spellingShingle | Lianzhong Jiang Wenfan Jiang Kin Seng Chiang All-Optical Tunable Filter With a Graphene-Buried Long-Period Waveguide Grating IEEE Photonics Journal All-optical tunable filter graphene long-period grating polymer waveguide |
| title | All-Optical Tunable Filter With a Graphene-Buried Long-Period Waveguide Grating |
| title_full | All-Optical Tunable Filter With a Graphene-Buried Long-Period Waveguide Grating |
| title_fullStr | All-Optical Tunable Filter With a Graphene-Buried Long-Period Waveguide Grating |
| title_full_unstemmed | All-Optical Tunable Filter With a Graphene-Buried Long-Period Waveguide Grating |
| title_short | All-Optical Tunable Filter With a Graphene-Buried Long-Period Waveguide Grating |
| title_sort | all optical tunable filter with a graphene buried long period waveguide grating |
| topic | All-optical tunable filter graphene long-period grating polymer waveguide |
| url | https://ieeexplore.ieee.org/document/10168983/ |
| work_keys_str_mv | AT lianzhongjiang allopticaltunablefilterwithagrapheneburiedlongperiodwaveguidegrating AT wenfanjiang allopticaltunablefilterwithagrapheneburiedlongperiodwaveguidegrating AT kinsengchiang allopticaltunablefilterwithagrapheneburiedlongperiodwaveguidegrating |