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Descripción

Supercontinuum generation (SCG) in a tapered chalcogenide fiber is desirable for broadening mid-infrared (or mid-IR, roughly the 2-20 μm wavelength range) frequency combs for applications such as molecular fingerprinting, trace gas detection, laser-driven particle acceleration, and x-ray production via high harmonic generation. Achieving efficient SCG in a tapered optical fiber requires precise control of the group velocity dispersion (GVD) and the temporal properties of the optical pulses at the beginning of the fiber, which depend strongly on the geometry of the taper. Due to variations in the tapering setup and procedure for successive SCG experiments-such as fiber length, tapering environment temperature, or power coupled into the fiber, in-situ spectral monitoring of the SCG is necessary to optimize the output spectrum for a single experiment. In-situ fiber tapering for SCG consists of coupling the pump source through the fiber to be tapered to a spectral measurement device. The fiber is then tapered while the spectral measurement signal is observed in real-time. When the signal reaches its peak, the tapering is stopped. The in-situ tapering procedure allows for generation of a stable, octave-spanning, mid-IR frequency comb from the sub harmonic of a commercially available near-IR frequency comb. This method lowers cost due to the reduction in time and materials required to fabricate an optimal taper with a waist length of only 2 mm. The in-situ tapering technique can be extended to optimizing microstructured optical fiber (MOF) for SCG or tuning of the passband of MOFs, optimizing tapered fiber pairs for fused fiber couplers and wavelength division multiplexers (WDMs), or modifying dispersion compensation for compression or stretching of optical pulses.

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Caltech Authors  

Autor(es)

Rudy, Charles W. -  Marandi, Alireza -  Vodopyanov, Konstantin L. -  Byer, Robert L. - 

Id.: 71382799

Versión: 1.0

Estado: Final

Tipo de recurso: Article  -  PeerReviewed  - 

Tipo de Interactividad: Expositivo

Nivel de Interactividad: muy bajo

Audiencia: Estudiante  -  Profesor  -  Autor  - 

Estructura: Atomic

Coste: no

Copyright: sí

Requerimientos técnicos:  Browser: Any - 

Relación: [References] http://resolver.caltech.edu/CaltechAUTHORS:20180608-153750646
[References] https://authors.library.caltech.edu/86947/

Fecha de contribución: 09-jun-2018

Contacto:

Localización:
* Rudy, Charles W. and Marandi, Alireza and Vodopyanov, Konstantin L. and Byer, Robert L. (2013) In-situ Tapering of Chalcogenide Fiber for Mid-infrared Supercontinuum Generation. Journal of Visualized Experiments , 75 . Art. No. e50518. ISSN 1940-087X . http://resolver.caltech.edu/CaltechAUTHORS:20180608-153750646

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