We have theoretically and experimentally investigated an optical fiber with circular polarization modes on one end and linear polarization modes on the other end. We call this fiber a polarization-transforming fiber because the local modes, or polarization states they represent, are converted from linear to circular, and visa versa, in the fiber. We have developed and implemented a postdraw process for making polarization-transforming fiber samples 30 mm long with losses less than 1 dB and a polarization-mode conversion from circular to linear greater than 20 dB. Also, we have modeled and measured the dependence on wavelength and temperature of polarization-transforming fiber samples. The measured normalized wavelength dependence of a sample fiber 30 mm long was approximately 1.4 × 10<sup>−4</sup> nm<sup>−1</sup>, and the measured normalized temperature dependence was approximately 6 × 10<sup>−4</sup> °C<sup>−1</sup>. These values are better in some cases than values for conventional high-birefringent fiber quarter-wave plates.
© 2003 Optical Society of America
(060.0060) Fiber optics and optical communications : Fiber optics and optical communications
(060.2310) Fiber optics and optical communications : Fiber optics
(230.0040) Optical devices : Detectors
(230.5440) Optical devices : Polarization-selective devices
Allen H. Rose, Nicolas Feat, and Shelley M. Etzel, "Wavelength and Temperature Performance of Polarization-Transforming Fiber," Appl. Opt. 42, 6897-6904 (2003)