Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group
  • Journal of Lightwave Technology
  • Vol. 16,
  • Issue 4,
  • pp. 639-
  • (1998)

Measurement of Depolarization Ratio and Ultimate Limit of Polarization Crosstalk in Silica-Based Waveguides by Using a POLCR

Not Accessible

Your library or personal account may give you access

Abstract

A polarization optical low coherence reflectometer (POLCR) is described that enables us to excite only the transverse electric (TE) mode of a test waveguide and to measure its Rayleigh backscatter signal distributions in the TE and transverse magnetic (TM) modes at a spatial resolution of 0.3 mm. The depolarization ratios of silica-based waveguides with relative refractive index differences of \Delta = 0.45 and 0.75% are obtained as 0.14 and 0.10, respectively, by measuring the bias in the ratio between the distributions in the TM and TE modes of each waveguide. By using the depolarization ratios and the Rayleigh backscatter signal levels, we calculate the ultimate polarization crosstalks to be {-}53 and {-}51 dB over 1 km, respectively. The actual polarization crosstalks of previously fabricated waveguides are about 50 dB higher than their ultimate limits for the same length of fiber.

[IEEE ]

PDF Article
More Like This
Ultimate limit of polarization cross talk in birefringent polarization-maintaining fibers

Kazumasa Takada, Katsunari Okamoto, Yutaka Sasaki, and Juichi Noda
J. Opt. Soc. Am. A 3(10) 1594-1603 (1986)

Atmospheric Raman depolarization-ratio measurements

Ulla Wandinger, Albert Ansmann, and Claus Weitkamp
Appl. Opt. 33(24) 5671-5673 (1994)

Polarization beam splitter based on a silicon nitride–silica–silicon horizontal slot waveguide

Yang Liu, Limin Chang, Zezheng Li, Lei Liu, Huan Guan, and Zhiyong Li
Opt. Lett. 44(6) 1335-1338 (2019)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved