Pulse compression using a tapered microstructure optical fiber
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Hu, Jonathan, Brian S. Marks, Curtis R. Menyuk, Jinchae Kim, Thomas F. Carruthers, Barbara M. Wright, Thierry F. Taunay, and E. Joseph Friebele. “Pulse Compression Using a Tapered Microstructure Optical Fiber.” Optics Express 14, no. 9 (May 1, 2006): 4026–36. https://doi.org/10.1364/OE.14.004026.
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This work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law.
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Abstract
We calculate the pulse compression in a tapered microstructure optical fiber with four layers of holes. We show that the primary limitation on pulse compression is the loss due to mode leakage. As a fiber’s diameter decreases due to the tapering, so does the air-hole diameter, and at a sufficiently small diameter the guided mode loss becomes unacceptably high. For the four-layer geometry we considered, a compression factor of 10 can be achieved by a pulse with an initial FWHM duration of 3 ps in a tapered fiber that is 28 m long. We find that there is little difference in the pulse compression between a linear taper profile and a Gaussian taper profile. More layers of air-holes allows the pitch to decrease considerably before losses become unacceptable, but only a moderate increase in the degree of pulse compression is obtained.