| Autor: |
Chong, W. S., Gan, S. X., Lai, C. K., Chong, W. Y., Choi, D., Madden, S., De La Rue, R. M., Ahmad, H. |
| Zdroj: |
IEEE Photonics Technology Letters; 6/1/2020, Vol. 32 Issue 11, p627-630, 4p |
| Abstrakt: |
A configurable optical waveguide polarizer using graphene oxide (GO) as a polarizing element has been demonstrated. The propagation characteristics of the GO-coated optical waveguide are changed from TM-pass to TE-pass by controlling the GO coating thickness in the sub-micron range during the deposition process. The highest extinction ratio measured for a TM-pass waveguide polarizer is 34.9 dB, using a coating length and thickness of 1.0 mm and $0.34~\mu \text{m}$ respectively, while the highest extinction ratio measured for a TE-pass polarizer is 46.0 dB, using a coating length and thickness of 1.0 mm and $0.71~\mu \text{m}$ respectively. The polarization extinction ratio has also been measured across the wavelength range from 1520 nm to 1620 nm - and a variation of less than 3.0 dB was obtained. Control of the coating thickness dependent characteristics of the GO-coated waveguides provides an avenue for tailoring of the polarization selection. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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