Topic
Polarization mode dispersion
About: Polarization mode dispersion is a research topic. Over the lifetime, 5147 publications have been published within this topic receiving 80055 citations. The topic is also known as: PMD.
Papers published on a yearly basis
Papers
More filters
TL;DR: A polarization sensitive endoscopic optical frequency domain imaging (PS-OFDI) system with a motorized distal scanning catheter with complex field averaging method based on the alignment of randomly pointing field phasors is developed to reduce speckle noise.
Abstract: A polarization sensitive endoscopic optical frequency domain imaging (PS-OFDI) system with a motorized distal scanning catheter is demonstrated. It employs a passive polarization delay unit to multiplex two orthogonal probing polarization states in depth, and a polarization diverse detection unit to detect interference signal in two orthogonal polarization channels. Per depth location four electro-magnetic field components are measured that can be represented in a complex 2x2 field matrix. A Jones matrix of the sample is derived and the sample birefringence is extracted by eigenvalue decomposition. The condition of balanced detection and the polarization mode dispersion are quantified. A complex field averaging method based on the alignment of randomly pointing field phasors is developed to reduce speckle noise. The variation of the polarization states incident on the tissue due to the circular scanning and catheter sheath birefringence is investigated. With this system we demonstrated imaging of ex vivo chicken muscle, in vivo pig lung and ex vivo human lung specimens.
31 citations
TL;DR: In this article, it was shown that the nonlinear depolarization induced by cross-polarization modulation leads to crosstalk between the polarization-division multiplex (PolDM) subchannels during their demultiplexing.
Abstract: We show theoretically and with the aid of computer simulations that the nonlinear depolarization induced by cross-polarization modulation leads to crosstalk between the polarization-division multiplex (PolDM) subchannels during their demultiplexing. This additive crosstalk can be approximated as additive Gaussian noise, and we derive expressions to estimate its variance. It can lead to significant penalties of up to several decibels for PolDM transmission and must be properly accounted for. We also show why time-interleaving both subchannels can significantly reduce these penalties.
31 citations
17 Mar 2001
TL;DR: Simulations demonstrate that the remaining power penalties are significantly reduced in a new fibre polarization mode dispersion mitigation scheme that combines polarization scrambling with forward error correction and adaptive electronic equalization.
Abstract: We propose a new fibre polarization mode dispersion (PMD) mitigation scheme that combines polarization scrambling with forward error correction and adaptive electronic equalization. Simulations demonstrate that the remaining power penalties are significantly reduced.
31 citations
TL;DR: In this article, two definitions and three measurement schemes for polarization mode dispersion are presented and a connection with the dynamical equation for the principal polarization states is made, and first results from the COST 241 interlaboratory measurement campaign are also presented.
Abstract: Two definitions and three measurement schemes for polarization mode dispersion are presented. Their relations, advantages and drawbacks are discussed. A connection with the dynamical equation for the principal polarization states is made. First results from the COST 241 interlaboratory measurement campaign are also presented.
31 citations
Patent•
20 Jun 1995TL;DR: In this article, the dispersion compensation fiber has a sign opposite to the sign of the color dispersion of the optical fiber transmission line, and the length of the fiber is set so as to conform to the value of the colour dispersion.
Abstract: A dispersion compensator of the present invention includes a dispersion compensation fiber and a polarization conversion mirror. The dispersion compensation fiber has color dispersion of a sign opposite to the sign of the color dispersion of the optical fiber transmission line, and the length thereof is set so as to conform to the value of the color dispersion of the optical fiber transmission line. Light propagating in the optical fiber transmission line then propagates in the dispersion compensation fiber from a first end toward a second end of it and is supplied to the polarization conversion mirror. The light supplied to the polarization conversion mirror is converted into light of a polarization condition orthogonal and time-reversed to the polarization condition of the light supplied to the polarization conversion mirror, and propagates in the dispersion compensation fiber from the second end toward the first end of it. This enables compensation not only for color dispersion but also for polarization mode dispersion.
31 citations