scholarly journals Wide and Fast Wavelength-Swept Fiber Laser Based on Dispersion Tuning for Dynamic Sensing

2009 ◽  
Vol 2009 ◽  
pp. 1-12 ◽  
Author(s):  
Shinji Yamashita ◽  
Yuichi Nakazaki ◽  
Ryosei Konishi ◽  
Osamu Kusakari
Keyword(s):  
Fiber Laser ◽  
Optical Amplifiers ◽  
Semiconductor Optical Amplifiers ◽  
Laser Cavity ◽  
Sweep Rate ◽  
Fiber Amplifiers ◽  
Fiber Sensing ◽  
Fbg Sensor ◽  
Erbium Doped ◽  
Very High

We have developed a unique wide and fast wavelength-swept fiber laser for dynamic and accurate fiber sensing. The wavelength tuning is based on the dispersion tuning technique, which simply modulates the loss/gain in the dispersive laser cavity. By using wideband semiconductor optical amplifiers (SOAs), the sweep range could be as wide as∼180 nm. Since the cavity contains no mechanical components, such as tunable filters, we could achieve very high sweep rate, as high as∼200 kHz. We have realized the swept lasers at three wavelength bands, 1550 nm, 1300 nm, and 800 nm, using SOAs along with erbium-doped fiber amplifiers (EDFAs), and in two laser configurations, ring and linear ones. We also succeeded in applying the swept laser for a dynamic fiber-Bragg grating (FBG) sensor system. In this paper, we review our researches on the wide and fast wavelength-swept fiber lasers.

A switchable triple-wavelength erbium-doped fiber laser with a linear laser cavity

2006 ◽  
Vol 48 (4) ◽  
pp. 632-635 ◽  
Author(s):  
D. Liu ◽  
N. Q. Ngo ◽  
H. N. Chan ◽  
C. K. Teu ◽  
S. C. Tjin
Keyword(s):  
Fiber Laser ◽  
Laser Cavity ◽  
Erbium Doped ◽  
Linear Laser

scholarly journals Graphene slurry based passive Q-switcher in erbium doped fiber laser

2019 ◽  
Vol 8 (4) ◽  
Author(s):  
Siti Nur Fatin Zuikafly ◽  
Nor Farhah Razak ◽  
Rizuan Mohd Rosnan ◽  
Sulaiman Wadi Harun ◽  
Fauzan Ahmad
Keyword(s):  
Pump Power ◽  
Fiber Laser ◽  
Pulse Width ◽  
Peak Power ◽  
Signal To Noise Ratio ◽  
Pulsed Laser ◽  
Laser Cavity ◽  
Signal To Noise ◽  
Maximum Pulse Energy ◽  
Erbium Doped

In this work, a Graphene slurry based passive Q-switcher fabricated from Graphene-Polylactic acid (PLA) filament which is used for 3D printing. To produce the Graphene slurry, the diameter of the filament was reduced and Tetrahydrofuran (THF) was used to dissolve the PLA. The Graphene-THF suspension was drop cast to the end of a fiber ferrule and the THF then evaporated to develop Graphene slurry based SA which is integrated in fiber laser cavity. At threshold input pump power of 30.45 mW, a Q-switched Erbium-doped fiber laser (EDFL) can be observed with the wavelength centered at 1531.01 nm and this remained stable up to a pump power of 179.5 mW. As the pump power was increased gradually, an increase in the repetition rates was recorded from 42 kHz to 125 kHz, while the pulse width was reduced to 2.58 μs from 6.74 μs. The Q-switched laser yielded a maximum pulse energy and peak power of 11.68 nJ and 4.16 mW, respectively. The proposed Graphene slurry based saturable absorber also produced a signal-to-noise ratio of 44 dB indicating a stable Q-switched pulsed laser.

Multi-Wavelength Fiber Laser Based on Two Cascaded Semiconductor Optical Amplifiers

2009 ◽  
Vol 46 (11) ◽  
pp. 87-91
Author(s):  
王永福 Wang Yongfu ◽  
王肇颖 Wang Zhaoying ◽  
贾东方 Jia Dongfang ◽  
郭以平 Guo Yiping ◽  
张蕾 Zhang Lei
Keyword(s):  
Fiber Laser ◽  
Optical Amplifiers ◽  
Semiconductor Optical Amplifiers ◽  
Multi Wavelength

Switchable different operation states in an erbium-doped fiber laser cavity with normal dispersion

2012 ◽  
Vol 285 (18) ◽  
pp. 3809-3815 ◽  
Author(s):  
Weiqing Gao ◽  
Meisong Liao ◽  
Hiroyasu Kawashima ◽  
Takenobu Suzuki ◽  
Yasutake Ohishi
Keyword(s):  
Fiber Laser ◽  
Laser Cavity ◽  
Normal Dispersion ◽  
Erbium Doped

Materials Aspects of Optical Amplifiers

1991 ◽  
Vol 244 ◽  
Author(s):  
D. J. DiGiovanni
Keyword(s):  
Optical Communication ◽  
Optical Amplifiers ◽  
Fiber Amplifiers ◽  
Host Material ◽  
Silica Fiber ◽  
Erbium Doped

ABSTRACTOptical amplifiers promise to revolutionize optical communication. Erbium-doped silica fiber amplifiers operating at 1.5 μm are now commercially available while the performance of devices using neodymium or praseodymium doped fiber in the 1.3 gtm telecommunications window are improving rapidly. This review discusses the importance of host material on amplifier characteristics.

Effects of gain ripples in semiconductor optical amplifiers on very high speed lightwave systems

1990 ◽  
Vol 2 (1) ◽  
pp. 48-50 ◽  
Author(s):  
M.Z. Iqbal ◽  
K.B. Ma ◽  
C.E. Zah ◽  
T.P. Lee ◽  
N.K. Cheung
Keyword(s):  
High Speed ◽  
Optical Amplifiers ◽  
Semiconductor Optical Amplifiers ◽  
Very High

Investigation on characteristics of self-organization in Mach-Zehnder erbium-doped fiber laser cavity

2008 ◽  
Vol 6 (3) ◽  
pp. 186-188
Author(s):  
刘丰年 Fengnian Liu ◽  
刘波 Bo Liu ◽  
黄榜才 Bangcai Huang ◽  
开桂云 Guiyun Kai ◽  
袁树忠 Shuzhong Yuan ◽  
...  
Keyword(s):  
Fiber Laser ◽  
Laser Cavity ◽  
Self Organization ◽  
Erbium Doped
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