Multi-wavelength pulse generator using time-lens compression
First Claim
1. A method for generating a comprising:
- providing a wavelength division multiplexed optical pulse train, said pulse train including pulses of a plurality of wavelengths;
phase modulating said pulse train to impose a quadratic phase thereon; and
passing said phase modulated pulse train through a dispersion element, thereby compressing said pulses and temporally spacing said pulses an equal distance from one another in said pulse train.
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Abstract
A method and apparatus for generating a multi-wavelength pulse train use a technique referred to as time-lens compression. The time-lens is formed of a phase modulator in series with a dispersion element. In addition to pulse compression, this time-lens simultaneously displaces the pulses according to their center wavelengths, resulting in a temporally evenly spaced multi-wavelength pulse train. An aberration correction technique, based on the temporal analog of a spatial correction lens, can also be employed improve the quality of the compressed pulses. Through use of CW DFB lasers and electrooptic phase modulators, the all-fiber system allows complete tunability of temporal spacing, spectral profile and repetition rate.
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2 Claims
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1. A method for generating a comprising:
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providing a wavelength division multiplexed optical pulse train, said pulse train including pulses of a plurality of wavelengths;
phase modulating said pulse train to impose a quadratic phase thereon; and
passing said phase modulated pulse train through a dispersion element, thereby compressing said pulses and temporally spacing said pulses an equal distance from one another in said pulse train. - View Dependent Claims (2)
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Specification