نتایج جستجو برای: birefringence

تعداد نتایج: 4097  

2012
Masahiro Yamanari Kotaro Ishii Shinichi Fukuda Yiheng Lim Lian Duan Shuichi Makita Masahiro Miura Tetsuro Oshika Yoshiaki Yasuno

PURPOSE To investigate a relationship between birefringence and elasticity of porcine sclera ex vivo using polarization-sensitive optical coherence tomography (PS-OCT). METHODS Elastic parameters and birefringence of 19 porcine eyes were measured. Four pieces of scleral strips which were parallel to the limbus, with a width of 4 mm, were dissected from the optic nerve head to the temporal sid...

1999
H. J. S. Dorren J. J. B. van den Heuvel

Pulse broadening for optical solitons due to birefringence is investigated. We present an analytical solution which describes the propagation of solitons in birefringent optical fibers. The special solutions consist of a combination of purely solitonic terms propagating along the principal birefringence axes and soliton-soliton interaction terms. The solitonic part of the solutions indicates th...

2017
Tianhua Xu Wencai Jing Hongxia Zhang Cen Huang Kun Liu Dagong Jia Yimo Zhang

Distributed stress sensor with a scanning Michelson white light interferometer can be used to detect stress distribution and its value by analyzing polarization mode coupling caused by stress field in PMFs (polarization maintaining fibers). In the measurement of polarization coupling, the birefringence in sensing fiber is usually considered to be wavelength-independent. The spatial resolution o...

2017
Philippe Morin Bertrand Kibler Julien Fatome Christophe Finot Guy Millot P. Morin B. Kibler J. Fatome C. Finot G. Millot

We study both numerically and experimentally the spectral dependence of the group modal birefringence in a highly birefringent nonlinear photonic crystal fibre. We demonstrate the possible sign inversion of the group modal birefringence and its cancellation in the telecommunication window corresponding to zero polarization mode dispersion. Two simple experimental techniques are used to evaluate...

Journal: :Optics letters 1994
P K Wai C R Menyuk

Polarization decorrelation in single-mode fibers with randomly varying birefringence is studied. We find that decorrelation length is minimized for a given beat length if the average autocorrelation length of the birefringence is close to the average beat length. The differential time delay between the polarization modes is found to depend on the autocorrelation length of the birefringence rath...

Journal: :Optics letters 1995
H Y Kim S K Kim H J Jeong H K Kim B Y Kim

In this Letter the effects of the twist of fiber laser cavities on the polarization properties of the laser output are investigated experimentally and theoretically. The directions and frequencies of two laser eigenpolarization modes are found to evolve in a much more complicated way as a function of the twist rate, compared with the well-known case of polarization evolution in a twisted passiv...

2014
R. Hui Y. Wan J. Li S. X. Jin J. Y. Lin H. X. Jiang

2017
Paul Berceau Mathilde Fouché Remy Battesti Carlo Rizzo P. Berceau M. Fouché R. Battesti C. Rizzo

2016
F. Nallet

The birefringence of a lyotropic lamellar phase is calculated as a function of dilution. It is found to vanish and change sign, provided the natural birefringence of surfactant bilayers is positive. Dispersion is calculated about the point of zero birefringence. These predictions are illustrated with experiments of spectrophotometry: the intensity of light transmitted between crossed polarizers...

Journal: :Optics letters 1998
N N Akhmediev J M Soto-Crespo S T Cundiff B C Collings W H Knox

Passively mode-locked lasers with intracavity weakly birefringent fiber are theoretically analyzed based on two coupled complex one-dimensional Ginzburg-Landau equations. The model includes fiber birefringence, spectral filtering, saturable gain, and saturable loss. Phase-locked soliton solutions are found for small amounts of birefringence and several types of soliton with periodic polarizatio...

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