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CW-to-pulse conversion using temporal Talbot array illuminators
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DOI：10.1364/OL.42.002427.png)
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Abstract
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We report on the linear conversion of continuous-wave (CW) laser light to optical pulses using temporal Talbot array illuminators (TAIs) with fractional orders 1/q(q <= 10), implemented by use of multilevel PM and dispersive propagation in a chirped fiber Bragg grating. The generated, subnanosecond optical pulse trains have repetition rates in the gigahertz range and show the presence of satellite pulses originated by the finite electrical modulation bandwidth (7.5 GHz). Though this fact impacts the resulting extinction ratio, an experimental comparison with time and Fresnel lenses indicates that temporal TAIs represent compact systems with high light gathering efficiency (>87%) at moderate values of compression (q <= 8), which can be tailored in repetition rate, gain, or width, through the fractional Talbot order for its use in pulse compression systems fed by CW light. (C) 2017 Optical Society of America
Keywords:
COMPRESSION
MODULATORS
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