Influence of losses induced by macrobends in the supercontinuum generation using standard fiber

R. Rojas-Laguna; J. M. Estudillo-Ayala; R. I. Mata-Chávez; E. Vargas-Rodríguez; J. M. Sierra-Hernández; J. A. Andrade-Lucio; C. O. Rodríguez-Ramírez

doi:10.1117/12.908907

15 February 2012 Influence of losses induced by macrobends in the supercontinuum generation using standard fiber

R. Rojas-Laguna, J. M. Estudillo-Ayala, R. I. Mata-Chávez, E. Vargas-Rodríguez, J. M. Sierra-Hernández, J. A. Andrade-Lucio, C. O. Rodríguez-Ramírez

Author Affiliations +

Proceedings Volume 8240, Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications XI; 82401M (2012) https://doi.org/10.1117/12.908907
Event: SPIE LASE, 2012, San Francisco, California, United States

Abstract

Supercontinuum generation is being widely studied due to its applications in communications, medicine and metrology. Usually, special fibers, such as photonic crystal fibers and dispersion-shifted fiber, have been utilized. However, there is few information about the potential use of standard fiber with this purpose, which shows some advantages: low cost and availability. In this work, the influence of losses due to induced macrobends on the supercontinuum generation using standard fiber was studied. The losses were introduced by wrapping 30 m in length of standard fiber on cylinders with different diameter, a nanosecond microchip laser and 1064 nm of wavelength were employed. The continuum was recorded at the fiber output by using an optical spectrum analyzer and its dynamics was analyzed by tuning the launched power. In a first stage, the fiber was used without bends generating strong firs-order Raman Stokes and a supercontinuum spectrum of 636 nm. When the fiber was wrapped in a cylinder of 0.9 cm of diameter to induce macrobends, the Raman Stokes of high order were attenuated and the output spectrum was reduced to 240 nm. Also, a peak pulse was observed, around 1030 nm, that means new frequencies were generated in the near infrared region. Thus, induced macrobends affect the supercontinuum broadening.

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R. Rojas-Laguna, J. M. Estudillo-Ayala, R. I. Mata-Chávez, E. Vargas-Rodríguez, J. M. Sierra-Hernández, J. A. Andrade-Lucio, and C. O. Rodríguez-Ramírez "Influence of losses induced by macrobends in the supercontinuum generation using standard fiber", Proc. SPIE 8240, Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications XI, 82401M (15 February 2012); https://doi.org/10.1117/12.908907

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KEYWORDS

Supercontinuum generation

Fiber lasers

Optical fibers

Raman spectroscopy

Single mode fibers

Modulation

Near infrared

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