Pan Honggang, Tong Zhengrong, Zhang Ailing, Song Dianyou, Xue Yuming. Switchable narrow line-width dual-wavelength erbium-doped fiber laser using cascaded multi-mode Bragg gratings and high fineness filter[J]. Infrared and Laser Engineering, 2014, 43(12): 3912-3917.
| Citation:
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Pan Honggang, Tong Zhengrong, Zhang Ailing, Song Dianyou, Xue Yuming. Switchable narrow line-width dual-wavelength erbium-doped fiber laser using cascaded multi-mode Bragg gratings and high fineness filter[J]. Infrared and Laser Engineering, 2014, 43(12): 3912-3917.
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Switchable narrow line-width dual-wavelength erbium-doped fiber laser using cascaded multi-mode Bragg gratings and high fineness filter
- 1.
Key Laboratory of Film Electronics and Communication Devices,School of Electronic Information Engineering,Tianjin University of Technology,Tianjin 300384,China;
- 2.
Key Laboratory of Film Electronics and Communication Devices and Key Laboratory of Intelligent Computing and Novel Software Technology,School of Computer and Communication Engineering,Tianjin University of Technology,Tianjin 300384,China
- Received Date: 2014-04-09
- Rev Recd Date:
2014-05-11
- Publish Date:
2014-12-25
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Abstract
A switchable narrow line-width dual-wavelength erbium-doped fiber laser using cascaded multi- mode Bragg gratings incorporating a novel high-finesse ring filter was proposed and demonstrated. The ring filter was a ring filter composed of two optical couplers and a section erbium-doped fiber. Thanks to the gain generated by the erbium-doped fiber, the ring filter has a high fineness spectral. The incorpora- tion of the ring filter led to the suppression of undesirable modes in the dual-wavelength erbium-doped fiber laser (EDFL). An experiment was carried out, in which six kinds of narrow line-width dual-wave- lengths combination were generated. And 3 dB linewidth of each wavelength of 0.14 nm to 0.16 nm without the filter was narrowed to 0.05 nm with the high fineness filter.
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