Pulse compression and pedestal suppression by self-similar propagation in nonlinear optical loop mirror

2020 ◽  
Vol 474 ◽  
pp. 126083 ◽  
Author(s):  
Esther Lidiya A. ◽  
Vasantha Jayakantha Raja R. ◽  
Anton Husakou
Keyword(s):  
Nonlinear Optical ◽  
Pulse Compression ◽  
Nonlinear Optical Loop Mirror ◽  
Self Similar ◽  
Loop Mirror

Low pedestal sub-17 fs pulse generation through cascaded self-similar compression in photonic crystal fibers

2021 ◽  
Author(s):  
Esther Lidiya A ◽  
Vasantha Jayakantha Raja R ◽  
shailendra K. Varshney
Keyword(s):  
Photonic Crystal ◽  
Pulse Width ◽  
Pulse Compression ◽  
Photonic Crystal Fibers ◽  
Ultrashort Pulses ◽  
Pulse Generation ◽  
Nonlinear Optical Loop Mirror ◽  
Self Similar ◽  
Loop Mirror ◽  
Crystal Fibers

Abstract We propound a realistic numerical model based on cascaded self-similar pulse compression to generate low pedestal ultrashort pulses at 2.5 µm. Self-similarity has been attained by modeling exponential dispersion decreasing and exponentially nonlinearity increasing chalcogenide photonic crystal fibers (PCFs). Initially, fundamental soliton compression in As2S3tapered PCF is investigated for the pedestal-free reduction of the pulse width. Subsequently, the compression factor is further enhanced in the As2Se3 PCF-based nonlinear optical loop mirror. Numerical outcomes reveal a compression of 1 ps pulse down to a pulse width of 16.6 fs with a peak power of 116 W in a total fiber length of L=61 cm.

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