Thulium-doped fibre broadband source for spectral region near 2 micrometers

2016 ◽  
Vol 24 (4) ◽  
Author(s):  
M. Písařík ◽  
P. Peterka ◽  
J. Aubrecht ◽  
J. Cajzl ◽  
A. Benda ◽  
...  
Keyword(s):  
Spontaneous Emission ◽  
Ring Laser ◽  
Amplified Spontaneous Emission ◽  
Full Width ◽  
Spectral Filter ◽  
Double Pass ◽  
Broadband Light Source ◽  
And Performance ◽  
Fibre Characteristics ◽  
Laser Setup

AbstractWe demonstrated two methods of increasing the bandwidth of a broadband light source based on amplified spontaneous emission in thulium-doped fibres. Firstly, we have shown by means of a comprehensive numerical model that the full-width at half maximum of the thulium-doped fibre based broadband source can be more than doubled by using specially tailored spectral filter placed in front of the mirror in a double-pass configuration of the amplified spontaneous emission source. The broadening can be achieved with only a small expense of the output power. Secondly, we report results of the experimental thulium-doped fibre broadband source, including fibre characteristics and performance of the thulium-doped fibre in a ring laser setup. The spectrum broadening was achieved by balancing the backward amplified spontaneous emission with back-reflected forward emission.

Design and performance analysis of all optical 4-bit parity generator and checker using dual-control dual SOA terahertz optical asymmetric demultiplexer (DCDS-TOAD)

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Kajal Maji ◽  
Kousik Mukherjee ◽  
Ashif Raja
Keyword(s):  
Performance Analysis ◽  
Spontaneous Emission ◽  
Extinction Ratio ◽  
Contrast Ratio ◽  
Amplified Spontaneous Emission ◽  
Control Input ◽  
Eye Diagram ◽  
All Optical ◽  
And Performance ◽  
Amplified Spontaneous Emission Noise

AbstractTera hertz optical asymmetric demultiplexer (TOAD) using two semiconductor optical amplifiers and two control signals has been used to design an all optical parity checker and generator. The same circuit can generate and check both even and odd parity using a control input. The numerical simulation using Matlab 2007b is done for performance analysis of the proposed device in terms of output bit pattern, amplified spontaneous emission (ASE) noise, extinction ratio, contrast ratio, pseudo eye diagram, relative eye opening (98.9% for 20 dB gain and 96.21% for 10 dB gain) and their variation with input control pulse energy, amplified spontaneous emission noise factor for different unsaturated gain. The simulated value of E.R. = 81.39 dB, C.R. = 83.15 dB, REOP = 98.9% and Q value = 86.16 dB are found for this proposal.

Effect of Molecular Morphology on Amplified Spontaneous Emission of Bis-Styrylbenzene Derivatives

2009 ◽  
Vol 21 (40) ◽  
pp. 4034-4038 ◽  
Author(s):  
Ryota Kabe ◽  
Hajime Nakanotani ◽  
Tomo Sakanoue ◽  
Masayuki Yahiro ◽  
Chihaya Adachi
Keyword(s):  
Spontaneous Emission ◽  
Amplified Spontaneous Emission ◽  
Molecular Morphology

scholarly journals Origin of Intramolecular Low‐Threshold Amplified Spontaneous Emission

2021 ◽  
pp. 2001956
Author(s):  
Qi Wei ◽  
Ruihong Duan ◽  
Qi Zhang ◽  
Linghai Xie ◽  
Ruidong Xia ◽  
...  
Keyword(s):  
Spontaneous Emission ◽  
Amplified Spontaneous Emission ◽  
Low Threshold

Conformationally restricted 2,5-diphenyloxazoles: failure of the electromer model for anomalous amplified spontaneous emission spikes

2006 ◽  
Vol 104 (5-7) ◽  
pp. 957-969 ◽  
Author(s):  
J. Saltiel ◽  
R. A. Ivanov ◽  
D. A. Gormin ◽  
T. S. R. Krishna ◽  
R. J. Clark
Keyword(s):  
Spontaneous Emission ◽  
Amplified Spontaneous Emission ◽  
Conformationally Restricted
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