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.
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TL;DR: Scanning the wavelength in high-birefringence fibers inherently measures the groupdelay difference, and not the phase delay difference, between the two polarization modes.
Abstract: Scanning the wavelength in high-birefringence fibers inherently measures the group delay difference, and not the phase delay difference, between the two polarization modes. Dispersion of the birefringence will result in a 10–20% error in fiber beat lengths interpolated from such measurements, even if only stress birefringence is present. Geometrical dispersion can introduce even larger errors in some fibers.
65 citations
01 Jan 2004
TL;DR: In this paper, a 40-Gb/s DWDM system with optimized signal filtering was proposed to achieve a 20-Pbit/s/km capacity-distance product for terrestrial optical networks.
Abstract: This paper presents an experimental investigation of 40-Gb/s DWDM transmission technologies that can potentially transport multiple terabits of aggregate capacity with ultrahigh spectral efficiency over several thousand kilometers of fiber in a terrestrial optical network. By using carrier-suppressed return-to-zero (CSRZ) differential-phase-shift-keyed (DPSK) modulation format with optimized signal filtering, we have demonstrated transmission of 6.4-Tb/s capacity with 0.8-bit/s/Hz spectral efficiency over 3200 km of fiber using 100-km amplified spans. This transmission was conducted using 160 50-GHz-spaced wavelength channels, each at 42.7 Gb/s, in the standard C + L wavelength bands. Low dispersion-slope TrueWave REACH fiber plus slope-matched dispersion compensating fiber with all-Raman amplification were also employed to achieve this record 20-Pbit/s/km capacity-distance product for terrestrial 40-Gb/s systems. In addition, we used a loop-synchronous polarization controller (PC) to better emulate the polarization effects of a straight-line system.
64 citations
TL;DR: Infrared materials with group-velocity dispersion values of opposite sign are used in combination to null second-order dispersion and compress the mid-infrared pulses.
Abstract: We report on the generation of essentially transform-limited mid-infrared pulses as short as 75 fs centered at 5 µm with 6 µJ of energy. Infrared materials with group-velocity dispersion values of opposite sign are used in combination to null second-order dispersion and compress the mid-infrared pulses.
63 citations
TL;DR: In this article, a numerical method for analyzing birefringence and dispersion characteristics of optical fibers is presented, based on the solution of full vectorial Maxwell equations, which is high accuracy no matter how great the geometrical anisotropy of the optical fiber.
Abstract: A new numerical method for analyzing birefringence and dispersion characteristics of birefringent optical fibers is presented. A major advantage of the method, based on the solution of full‐vectorial Maxwell equations, is its high accuracy no matter how great the geometrical anisotropy of the optical fiber. To verify the reliability of our numerical procedure, the modal birefringence and the form‐induced polarization mode dispersion in elliptical core fibers with different eccentricities are investigated and their values compared with some theoretical and experimental results.
63 citations
TL;DR: A new method for precisely measuring the wavelength dependence of modal birefringence in highly bireFringent fibers is presented using an incoherent light source such as a fiber Raman laser.
Abstract: Modal birefringence of highly birefringent fibers can be measured nondestructively by the elastooptic modulation method. Based on this modulation method, a new method for precisely measuring the wavelength dependence of modal birefringence in highly birefringent fibers is presented using an incoherent light source such as a fiber Raman laser.
63 citations