Switchable dual-wavelength passively mode-locked fiber laser using SESAM and comb filter

2010 ◽  
Author(s):  
Zhi-Chao Luo ◽  
Ai-Ping Luo ◽  
Wen-Cheng Xu
Keyword(s):  
Fiber Laser ◽  
Dual Wavelength ◽  
Comb Filter

scholarly journals Tunable and Switchable Erbium-Doped Fiber Laser Using a Multimode-Fiber Based Filter

2018 ◽  
Vol 8 (7) ◽  
pp. 1135 ◽  
Author(s):  
Anum Khattak ◽  
Gerard Tatel ◽  
Li Wei
Keyword(s):  
Fiber Laser ◽  
Single Mode ◽  
Polarization Controller ◽  
Dual Wavelength ◽  
Comb Filter ◽  
Multimode Fiber ◽  
Erbium Doped ◽  
Optical Fiber Sensing ◽  
The Difference ◽  
Spectral Ranges

We demonstrated a compact tunable and switchable single/dual-wavelength erbium-doped fiber laser. The fiber laser can be tuned and switched from single-wavelength to dual-wavelength oscillation by using our recently proposed tunable comb filter. The comb filter consists of a section of multimode fiber (MMF) coiled into a polarization controller and two sections of single mode fibers (SMFs) to form a SMF/MMF/SMF structure, serving as a simple tunable all-fiber Mach-Zehnder interferometer. Due to the insertion of the MMF-based polarization controller (PC), an additional phase shift is introduced from the difference of the birefringence intensity in different dominant modes, which can be used to tune the fiber laser. In the experiment, by properly adjusting the PC, a tuning range of 9.3 nm can be achieved for the single-wavelength operation. Moreover, dual-wavelength operation with different free-spectral-ranges can be obtained. The tunable and switchable fiber lasers are of great importance for their applications in optical testing, optical fiber sensing, and signal processing.

DUAL WAVELENGTH HIGH POWER DOUBLE-CLAD ERBIUM/YTTERBIUM-DOPED FIBER LASER

2011 ◽  
Vol 20 (04) ◽  
pp. 443-451
Author(s):  
M. R. A. MOGHADDAM ◽  
S. W. HARUN ◽  
S. SHAHI ◽  
H. AHMAD
Keyword(s):  
Fiber Laser ◽  
High Power ◽  
Wavelength Region ◽  
Dual Wavelength ◽  
Comb Filter ◽  
Mode Competition ◽  
Mode Suppression ◽  
Loop Mirror ◽  
Power Variance ◽  
Side Mode

A dual wavelength high power double-clad erbium/ytterbium-doped fiber laser with a narrowest spacing of 0.4 nm and a M2 value of close to unity is presented in the region of 1565 nm. This result can be realized with a significant improvement of the mode competition problem using a loop mirror as a comb filter. The wavelength region can also be varied using polarization controllers in the loop mirror. This dual-wavelength fiber laser with side mode suppression ratio (SMSR) of 40 dB is quite stable, and the output power variance is as low as 0.46 dB.

A Stable and Switchable Narrow Linewidth Fiber Laser

2011 ◽  
Vol 130-134 ◽  
pp. 4057-4060
Author(s):  
Xiu Feng Yang ◽  
Xiu Li Fang ◽  
Zheng Rong Tong ◽  
Ye Cao
Keyword(s):  
Photonic Crystal ◽  
Fiber Laser ◽  
Room Temperature ◽  
Dual Wavelength ◽  
Comb Filter ◽  
Narrow Linewidth ◽  
Power Fluctuation ◽  
Dual Wavelength Laser ◽  
Crystal Fiber ◽  
Two Peaks

A switchable fiber laser based on Mach-Zehnder interferometer (MZI) and photonic crystal fiber (PCF) is demonstrated. A section of PCF in the fiber laser is used to induce four-wave mixings (FWM) effect and MZI acts as a comb filter. Experimental results show that stable single-wavelength, dual-wavelength and triple-wavelength operations can be obtained with the adjustment of the polarization controller. The power of two peaks of the dual-wavelength laser is almost the same under room temperature with an output power fluctuation less than 0.6dB. The advantages of the proposed fiber laser include quite stable wavelength and narrow linewidth owing to the contributions of FWM in the PCF.

Single/dual-wavelength switchable and tunable passively Q-switched erbium-doped fiber laser

2020 ◽  
Vol 111 ◽  
pp. 103519
Author(s):  
Shuangcheng Chen ◽  
Baole Lu ◽  
Zengrun Wen ◽  
Haowei Chen ◽  
Jintao Bai
Keyword(s):  
Fiber Laser ◽  
Dual Wavelength ◽  
Erbium Doped

scholarly journals Metallic 2H-Tantalum Selenide Nanomaterials as Saturable Absorber for Dual-Wavelength Q-Switched Fiber Laser

Sensors ◽  
2021 ◽  
Vol 21 (1) ◽  
pp. 239
Author(s):  
Lingling Yang ◽  
Ruwei Zhao ◽  
Duanduan Wu ◽  
Tianxiang Xu ◽  
Xiaobiao Liu ◽  
...  
Keyword(s):  
Fiber Laser ◽  
Saturable Absorber ◽  
Peak Power ◽  
Dual Wavelength ◽  
Transition Metal Dichalcogenide ◽  
Promising Candidate ◽  
Laser Applications ◽  
Maximum Pulse Energy ◽  
Structure Simulation ◽  
Tantalum Selenide

A novel 2H-phase transition metal dichalcogenide (TMD)–tantalum selenide (TaSe2) with metallic bandgap structure is a potential photoelectric material. A band structure simulation of TaSe2 via ab initio method indicated its metallic property. An effective multilayered TaSe2 saturable absorber (SA) was fabricated using liquid-phase exfoliation and optically driven deposition. The prepared 2H–TaSe2 SA was successfully used for a dual-wavelength Q-switched fiber laser with the minimum pulse width of 2.95 μs and the maximum peak power of 64 W. The repetition rate of the maximum pulse energy of 89.9 kHz was at the level of 188.9 nJ. The metallic 2H–TaSe2 with satisfactory saturable absorbing capability is a promising candidate for pulsed laser applications.

A microwave photonic filter using a switchable multiple dual-wavelength erbium-doped fiber laser

2008 ◽  
Vol 10 (8) ◽  
pp. 085304 ◽  
Author(s):  
G Ning ◽  
J Q Zhou ◽  
P Shum ◽  
S Aditya ◽  
Vincent Wong ◽  
...  
Keyword(s):  
Fiber Laser ◽  
Dual Wavelength ◽  
Microwave Photonic ◽  
Erbium Doped
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