Dispersion compensation using multi-mode injection locking in Fabry-Perot semiconductor laser

2004 ◽  
Author(s):  
Lixin Xu ◽  
W.H. Chung ◽  
L.Y. Chan ◽  
L.F.K. Lui ◽  
P.K.A. Wai ◽  
...  
Keyword(s):  
Semiconductor Laser ◽  
Dispersion Compensation ◽  
Injection Locking ◽  
Fabry Perot ◽  
Multi Mode

Selective injection locking of a multi-mode semiconductor laser to a multi-frequency reference beam

2014 ◽  
Vol 68 (7) ◽  
Author(s):  
Mysore Srinivas Pramod ◽  
Tao Yang ◽  
Kanhaiya Pandey ◽  
Massimo Giudici ◽  
David Wilkowski
Keyword(s):  
Semiconductor Laser ◽  
Reference Beam ◽  
Injection Locking ◽  
Frequency Reference ◽  
Multi Mode

Self-injection-locking linewidth narrowing in a semiconductor laser coupled to an external fiber-optic ring resonator

2017 ◽  
Vol 405 ◽  
pp. 253-258 ◽  
Author(s):  
Dmitry A. Korobko ◽  
Igor O. Zolotovskii ◽  
Krassimir Panajotov ◽  
Vasily V. Spirin ◽  
Andrei A. Fotiadi
Keyword(s):  
Semiconductor Laser ◽  
Ring Resonator ◽  
Fiber Optic ◽  
Injection Locking

A Method of Dispersion Compensation Based on Warped Frequency Transform

2013 ◽  
Vol 718-720 ◽  
pp. 2062-2067 ◽  
Author(s):  
Shang Chen Fu ◽  
Zhen Jian Lv ◽  
Ding Ma ◽  
Li Hua Shi
Keyword(s):  
High Resolution ◽  
Velocity Dispersion ◽  
Lamb Waves ◽  
Group Velocity Dispersion ◽  
Dispersion Compensation ◽  
Imaging Method ◽  
Finite Element Software ◽  
Damage Imaging ◽  
Resolution Imaging ◽  
Multi Mode

The use of Lamb waves for structural health monitoring (SHM) has complicated by its multi-mode character and dispersion effect, which impacts the damage positioning and high-resolution imaging. The group velocity dispersion curves of Lamb waves can be employed to warp the frequency axis, and then to establish warped frequency transform (WFT) to process Lamb waves. In this paper, received signals are directly compensated with warped frequency transform to suppress dispersion, and a new imaging method is proposed based on warped frequency transform. The propagation of Lamb waves in damaged aluminum plate is simulated by finite element software ABAQUS, results show that warped frequency transform can effectively compensate dispersive wave-packets, and high-resolution damage imaging can be obtained by the proposed method.

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