| Autor: |
Ying Guo, Fengping Yan, Ting Feng, Luna Zhang, Qi Qin, Wenguo Han, Zhuoya Bai, Hong Zhou, Yuping Suo |
| Jazyk: |
angličtina |
| Rok vydání: |
2020 |
| Předmět: |
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| Zdroj: |
IEEE Photonics Journal, Vol 12, Iss 2, Pp 1-10 (2020) |
| Druh dokumentu: |
article |
| ISSN: |
1943-0655 |
| DOI: |
10.1109/JPHOT.2020.2973671 |
| Popis: |
A switchable multi-wavelength thulium-doped fiber laser (TDFL) using a four-mode fiber based Sagnac loop filter was proposed and demonstrated. The Sagnac loop, incorporating a 4.8 m long four-mode step-index fiber, acting as a comb filter was analyzed theoretically and experimentally. By adjusting two polarization controllers, eight stable single-wavelength operations and five stable dual-wavelength operations were obtained with easy switching between the different operation modes. The wavelength range covered during the single-wavelength switchable operation with a signal-to-noise ratio of up to 55 dB was ~28.51 nm. In dual-wavelength switchable operation, the maximum and minimum wavelength spacings were ~21.78 nm and ~1.50 nm, respectively. Due to the abundant wavelength resources, the proposed TDFL has great potential in wavelength division multiplexing free-space optical communications, optical fiber sensing, and photonic generation of microwave signals. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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