scholarly journals Ultra-low Noise Supercontinuum Generation with Flat-near Zero All Normal Dispersion Pure Silica Fiber at GHz Repetition Rate

2019 ◽  
Author(s):  
Shreesha Rao D. S. ◽  
Rasmus D. Engelsholm ◽  
Ivan Bravo Gonzalo ◽  
Binbin Zhou ◽  
Patrick Bowen ◽  
...  
Keyword(s):  
Repetition Rate ◽  
Peak Power ◽  
Supercontinuum Generation ◽  
Low Noise ◽  
Silica Fiber ◽  
Normal Dispersion ◽  
Holey Fiber ◽  
Pure Silica ◽  
Ultra Low Noise

A pure silica holey fiber with $\beta_2$ of 0.44 ps$^2$/km at 1.55 $\mu$m and less than 1 ps$^2$/km from 1.3 to 1.75 $\mu$m was engineered and drawn. It is numerically shown to generate a flat coherent spectrum, pumped by a 2 kW peak power, 250 fs pulse propagating 20 m.

scholarly journals Ultra-low-noise supercontinuum generation with a flat near-zero normal dispersion fiber

2019 ◽  
Vol 44 (9) ◽  
pp. 2216 ◽  
Author(s):  
Shreesha Rao D. S. ◽  
Rasmus D. Engelsholm ◽  
Iván B. Gonzalo ◽  
Binbin Zhou ◽  
Patrick Bowen ◽  
...  
Keyword(s):  
Supercontinuum Generation ◽  
Low Noise ◽  
Normal Dispersion ◽  
Ultra Low Noise

Design of all-normal dispersion photonic crystal fiber for high coherent broadband supercontinuum generation in the telecommunication window

2015 ◽  
Vol 24 (03) ◽  
pp. 1550026 ◽  
Author(s):  
Chunfu Cheng ◽  
Yiwen Ou ◽  
Jinye Zhang ◽  
Qinghua Lv ◽  
Jinrong Zhu ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Phase Modulation ◽  
Peak Power ◽  
Supercontinuum Generation ◽  
Geometrical Parameters ◽  
Optimized Design ◽  
Normal Dispersion ◽  
Crystal Fiber ◽  
Telecommunication Window

An all-normal dispersion photonic crystal fiber with nearly zero flattened dispersion at 1550 nm is designed for generating high coherent broadband supercontinuum. It is found that an all normal dispersion photonic crystal fiber with nearly zero flattened dispersion at 1550 nm can be obtained by appropriately designing geometrical parameters and optimizing the index of the first ring of air-holes with filling different index liquid of the photonic crystal fiber. The results show that the optimized design photonic crystal fiber for pumping at 1550 nm is suitable for flat broadband and high coherent supercontinuum generation with only 4 kW input peak power in a 40 cm long of the photonic crystal fiber. It is also found the weaker the dispersion effect is, the more advantage to the high coherent broadband supercontinuum generation due to the self-phase modulation.

scholarly journals The Role of the Raman Gain in the Noise Dynamics of All-Normal Dispersion Silica FIber Supercontinuum Generation

2019 ◽  
Author(s):  
Ivan Bravo Gonzalo ◽  
Ole Bang
Keyword(s):  
Numerical Investigation ◽  
Supercontinuum Generation ◽  
Silica Fiber ◽  
Raman Gain ◽  
Normal Dispersion ◽  
The Difference

We present a numerical investigation of the difference in the noise dynamics of all-normal dispersion silicafiber supercontinuum when the measured Raman gain, instead of the analytical Raman models, is used in the simulations.

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