Single polarization fiber and method of evaluating fiber...

Details Single polarization fiber and method of evaluating fiber... Single polarization fiber and method of evaluating fiber...

2008-09-09

2008-09-09

Pak, Sung (Department: 2874)

Optical waveguides

Optical fiber waveguide with cladding

Reexamination Certificate

active

11331905

ABSTRACT:
A method for measuring fundamental mode cutoff wavelength of single polarization fiber comprising: (i) launching pulsed light of at least one wavelength λiinto one end of the single polarization fiber; (ii) measuring backscattered light intensity corresponding to said wavelength to obtain the backscattered light intensity as a function of fiber position, wherein the backscattered light propagates through the same end of the fiber; and (iii) determining at least one cutoff wavelength and the corresponding position within said fiber for the cutoff wavelength, based on a specified threshold light intensity level.

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patent: 2005/0244118 (2005-11-01), Berkey et al.
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“Stress-Induced Single-Polarization Single-Mode Fiber”, W. Eickhoff; Optics Letters, Dec. 1982; vol. 7, No. 12; pp. 629-631.
“Photonic Crystal Fiber”; Hirokazu Kubota; Proc. of SPIE vol. 5623; pp. 292-297.
“Broadband Single-Polarization Photonic Crystal Fiber”; J. R. Folkenberg, et al; Optics Letters, vol. 30, No. 12; Jun. 15, 2005.

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