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Temporal and amplitude modulation at C-band region using Bi2Te3-based optical modulator

Ahmad, Harith and Yusoff, Norazriena and Lim, Hwee San and Mat Jafri, Mohd Zubir and Zulkifli, Mohd Zamani and Tiu, Zian Cheak (2020) Temporal and amplitude modulation at C-band region using Bi2Te3-based optical modulator. Journal of Modern Optics, 67 (7). pp. 638-646. ISSN 0950-0340 E-ISSN 1362-3044

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A temporal and amplitude modulator based on few-layers bismuth telluride (Bi2Te3) flakes is demonstrated for C-band operation. The few-layers thick Bi2Te3 flakes are prepared by mechanically exfoliating a Bi2Te3 crystal. As an optical pulse modulator, the Bi2Te3-based saturable absorber (SA) provides stable Q-switching operation at 1561.1 nm with a maximum repetition rate of 70.92 kHz and minimum pulse width of 2.38 µs. As an optical amplitude modulator, two linear regions at different pump power ranges are obtained in the regression line of the peak intensity. The first linear region covers a pump power range from 0.0 to 80.32 mW and corresponds to a modulation efficiency of 0.05 dB/mW, while the second linear region covers a pump power range of 80.32–98.64 mW with a modulation efficiency of 0.81 dB/mW.

Item Type: Article (Journal)
Additional Information: 8870/82866
Uncontrolled Keywords: amplitude modulator, C-band region, fibre laser, pulse modulato, rQ-switched, Topological insulator
Subjects: Q Science > Q Science (General)
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button): Kulliyyah of Science
Depositing User: Dr M Z Zulkifli
Date Deposited: 14 Sep 2020 08:34
Last Modified: 14 Sep 2020 08:34
URI: http://irep.iium.edu.my/id/eprint/82866

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