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11 October 2005 Study of monolithic integrable directional coupler structures as pulse compressors in InGaAsP
Martín López García, Horacio Lamela, Guillermo Carpintero
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Proceedings Volume 5958, Lasers and Applications; 595810 (2005) https://doi.org/10.1117/12.625429
Event: Congress on Optics and Optoelectronics, 2005, Warsaw, Poland
Abstract
An integrable device for pulse compression based in a directional coupler is presented. InGaAsP/ InP materials have been used in order to design an integrable structure. The length of the device is calculated in vertical and lateral guides. Each of the supermodes in the total structure presents a giant Group Velocity Dispersion (GVD) which make possible to obtain total pulse chirp compensation if the pulse propagates enought distance into the guides. In case of vertical structures, two guides of InGaAsp have been used to obtain GVD's of 105 ps2/Km wich allow high compression rates. Secondly we have designed a directional coupler using lateral coupled guides calculated with Efective Index Method (EIM) and values arround 4 104 ps2/Km have been achieved. Both designs are compared between then taking into account several important parameters as device length and fabrication issues.
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Martín López García, Horacio Lamela, and Guillermo Carpintero "Study of monolithic integrable directional coupler structures as pulse compressors in InGaAsP", Proc. SPIE 5958, Lasers and Applications, 595810 (11 October 2005); https://doi.org/10.1117/12.625429
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KEYWORDS
Dispersion
Picosecond phenomena
Directional couplers
Waveguides
Polarization
Semiconductor lasers
Wave propagation
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