| Aruna Ghosh,Abdulkadir Mukhtar Diblawe,Uttam Kumar Samanta,Moh Yasin,Sulaiman Wadi Harun,Mukul Chandra Paul.Dual-wavelength all-fiber Q-switched fiber laser using bismuth-doped fiber as saturable absorber[J].Optoelectronics Letters,2024,(3):147-151 |
| Dual-wavelength all-fiber Q-switched fiber laser using bismuth-doped fiber as saturable absorber |
| Author Name | Affiliation | | Aruna Ghosh | Fiber Optics and Photonics Division, CSIR-Central Glass and Ceramic Research Institute, Kolkata 700032, India
Physics Department, Jadavpur University, Kolkata 700032, India | | Abdulkadir Mukhtar Diblawe | Photonics Engineering Laboratory, Department of Electrical Engineering, University of Malaya, Kuala Lumpur 50603, Malaysia | | Uttam Kumar Samanta | Fiber Optics and Photonics Division, CSIR-Central Glass and Ceramic Research Institute, Kolkata 700032, India
Physics Department, Jadavpur University, Kolkata 700032, India | | Moh Yasin | Department of Physics, Faculty of Science and Technology, Airlangga University, Surabaya, Indonesia | | Sulaiman Wadi Harun | Photonics Engineering Laboratory, Department of Electrical Engineering, University of Malaya, Kuala Lumpur 50603, Malaysia | | Mukul Chandra Paul | Fiber Optics and Photonics Division, CSIR-Central Glass and Ceramic Research Institute, Kolkata 700032, India |
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| Abstract: |
| A passively Q-switched all-fiber laser is demonstrated using a 10-cm-long bismuth-doped fiber (BDF) as a saturable absorber (SA). The dual-wavelength operation was obtained due to the nonlinear effect inside the fabricated BDF, which has a high germanium content. Stable Q-switched pulses were obtained at the dual synchronous wavelengths of 1 530.1 nm and 1 531.1 nm. When the pump power is tuned from 105.3 mW to 191.0 mW, the repetition rate can be varied from 82.6 kMz to 117.6 kHz. The maximum pulse energy and average output power were 83.4 nJ and 9.8 mW, respectively while the minimum pulse width was 8.5 μs at the maximum pump power of 191.0 mW. Our results indicate that BDF could be a promising alternative optical modulator for pulsed fiber laser application. |
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