Ultrashort pulse propagation in highly birefringent photonic crystal fibers

A. Ortigosa-Blanch, J. C. Knight, W. J. Wadsworth, B. J. Mangan, P. St J. Russell

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Summary form only given. Supercontinuum generation in "photonic crystal" fibers results from a relatively small core size and anomalous group velocity dispersion. Although the polarization sensitivity of this process has been previously noted it has not been investigated in polarization maintaining highly birefringent fiber. We have fabricated photonic crystal fibers with an intentionally high birefringence by stacking capillaries and rods. Typically, our fibers had a core dimension in the range of 1-4 μm and polarization-mode beat lengths of substantially less than 1 mm-less than that previously reported in conventional fibers. The variation with wavelength of the group index and the dispersion of the two polarization eigenmodes in the single-mode fiber is shown. A Ti:sapphire laser was used to launch pulses of different energies (875 nm, 76 MHz repetition frequency, 200 fs FWHM pulse duration) into the fiber in different polarization states, and the output was analyzed. It is worth noting that the polarization-mode walk-off length for these pulses in this fiber is around 10.4 mm, while the group-index-matched wavelengths for 875 nm excitation are 575 nm and 665 nm. Furthermore, one can readily find wavelengths where the dispersion of the two modes eigenmodes is opposite in sign.

Original languageEnglish
Title of host publicationTechnical Digest - Summaries of Papers Presented at the Quantum Electronics and Laser Science Conference, QELS 2001
PublisherIEEE
Number of pages1
ISBN (Electronic)155752663X, 9781557526632
DOIs
Publication statusPublished - 1 Jan 2001
EventQuantum Electronics and Laser Science Conference, QELS 2001 - Baltimore, USA United States
Duration: 6 May 200111 May 2001

Publication series

NameTechnical Digest - Summaries of Papers Presented at the Quantum Electronics and Laser Science Conference, QELS 2001

Conference

ConferenceQuantum Electronics and Laser Science Conference, QELS 2001
CountryUSA United States
CityBaltimore
Period6/05/0111/05/01

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Radiation

Cite this

Ortigosa-Blanch, A., Knight, J. C., Wadsworth, W. J., Mangan, B. J., & Russell, P. S. J. (2001). Ultrashort pulse propagation in highly birefringent photonic crystal fibers. In Technical Digest - Summaries of Papers Presented at the Quantum Electronics and Laser Science Conference, QELS 2001 [961937] (Technical Digest - Summaries of Papers Presented at the Quantum Electronics and Laser Science Conference, QELS 2001). IEEE. https://doi.org/10.1109/QELS.2001.961937

Ultrashort pulse propagation in highly birefringent photonic crystal fibers. / Ortigosa-Blanch, A.; Knight, J. C.; Wadsworth, W. J.; Mangan, B. J.; Russell, P. St J.

Technical Digest - Summaries of Papers Presented at the Quantum Electronics and Laser Science Conference, QELS 2001. IEEE, 2001. 961937 (Technical Digest - Summaries of Papers Presented at the Quantum Electronics and Laser Science Conference, QELS 2001).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Ortigosa-Blanch, A, Knight, JC, Wadsworth, WJ, Mangan, BJ & Russell, PSJ 2001, Ultrashort pulse propagation in highly birefringent photonic crystal fibers. in Technical Digest - Summaries of Papers Presented at the Quantum Electronics and Laser Science Conference, QELS 2001., 961937, Technical Digest - Summaries of Papers Presented at the Quantum Electronics and Laser Science Conference, QELS 2001, IEEE, Quantum Electronics and Laser Science Conference, QELS 2001, Baltimore, USA United States, 6/05/01. https://doi.org/10.1109/QELS.2001.961937
Ortigosa-Blanch A, Knight JC, Wadsworth WJ, Mangan BJ, Russell PSJ. Ultrashort pulse propagation in highly birefringent photonic crystal fibers. In Technical Digest - Summaries of Papers Presented at the Quantum Electronics and Laser Science Conference, QELS 2001. IEEE. 2001. 961937. (Technical Digest - Summaries of Papers Presented at the Quantum Electronics and Laser Science Conference, QELS 2001). https://doi.org/10.1109/QELS.2001.961937
Ortigosa-Blanch, A. ; Knight, J. C. ; Wadsworth, W. J. ; Mangan, B. J. ; Russell, P. St J. / Ultrashort pulse propagation in highly birefringent photonic crystal fibers. Technical Digest - Summaries of Papers Presented at the Quantum Electronics and Laser Science Conference, QELS 2001. IEEE, 2001. (Technical Digest - Summaries of Papers Presented at the Quantum Electronics and Laser Science Conference, QELS 2001).
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AB - Summary form only given. Supercontinuum generation in "photonic crystal" fibers results from a relatively small core size and anomalous group velocity dispersion. Although the polarization sensitivity of this process has been previously noted it has not been investigated in polarization maintaining highly birefringent fiber. We have fabricated photonic crystal fibers with an intentionally high birefringence by stacking capillaries and rods. Typically, our fibers had a core dimension in the range of 1-4 μm and polarization-mode beat lengths of substantially less than 1 mm-less than that previously reported in conventional fibers. The variation with wavelength of the group index and the dispersion of the two polarization eigenmodes in the single-mode fiber is shown. A Ti:sapphire laser was used to launch pulses of different energies (875 nm, 76 MHz repetition frequency, 200 fs FWHM pulse duration) into the fiber in different polarization states, and the output was analyzed. It is worth noting that the polarization-mode walk-off length for these pulses in this fiber is around 10.4 mm, while the group-index-matched wavelengths for 875 nm excitation are 575 nm and 665 nm. Furthermore, one can readily find wavelengths where the dispersion of the two modes eigenmodes is opposite in sign.

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