نتایج جستجو برای: dispersion length

تعداد نتایج: 366813  

2012
S. H. Lawan

Chromatic dispersion and fiber attenuation pose a great problem in the detection of optical signals. Dispersion causes pulse broadening which limits the information carrying capacity of the fiber while attenuation limits the maximum transmission distance along the fiber. An approximate Gaussian pulse propagation model is obtained from the solution of Nonlinear Schrödinger Equation to represent ...

ژورنال: علوم آب و خاک 2009
محمد ولی سامانی, حسین, معاضد, هادی, معروف پور, عیسی, کشکولی, حیدرعلی,

Tracer experiments are very important in the studies related to aquifer contamination for determination of dispersion coefficient. In this study, the effect of sampling method on the dispersion coefficients of two simulated sandy aquifers was examined. The physical model was made from Plexiglas material with inner length, width and height of 72, 10 and 120 cm, respectively. A solution containin...

Journal: :Optics letters 1995
C J Brooks G L Vossler K A Winick

An integrated-optic dispersion compensator that uses chirped waveguide gratings is designed and fabricated. The 7-mm-long chirped grating is realized by a recently proposed method of curving a waveguide through a uniform grating. At 800 nm, the fabricated device exhibits a reflection bandwidth in excess of 0.5 nm and a nearly quadratic phase response corresponding to a fiber dispersion–length p...

Journal: :Optics letters 2012
S H M Larsen M E V Pedersen L Grüner-Nielsen M F Yan E M Monberg P W Wisk K Rottwitt

This Letter demonstrates a polarization-maintaining higher-order mode fiber module that has anomalous dispersion at 1 μm. The group velocity dispersion of the module is measured, showing a split of the two polarization axes. The excellent polarization-maintaining properties of the relevant fiber modes for the higher-order mode fiber are likewise demonstrated employing a new simple method for th...

2012
Nahyan Al Mahmud Bobby Barua

The trend toward higher bit rates in lightwave communication has interest in dispersion-shifted fibre to minimize dispersion penalties. At the same time optical amplifiers have increased interest in wavelength multiplexing. These two methods of increasing system capacity if used together can result in severe degradation due to fibre nonlinearity. So the effect of dispersion, input power, fibre ...

2006
Tuomo Ritari Tapio Niemi Hanne Ludvigsen Mark Wegmuller Nicolas Gisin Jacob Riis Folkenberg Anders Petterson

We report on an experimental study of the polarization properties of large mode-area photonic crystal fibers (PCFs). We find that such fibers may exhibit very low birefringence and polarization-mode dispersion (PMD) indicating a highly symmetrical hole structure over a long length. Moreover, the influence of temperature on the polarization-mode dispersion is investigated. The results show that ...

2016
Rupinder Kaur Mandeep Singh

Dispersion compensation in optical fiber communication system is analyzed. Performance is analyzed at10 Gbps in optical communication system with different transmission distance. To analyze the different modulation formats for optical modulation system and the impact of dispersion compensators on the performance of efficient optical communication system. Q factor and BER is analyzed with respec...

Journal: :Optics express 2016
M E McCarthy M A Z Al Kahteeb F M Ferreira A D Ellis

In this paper, we numerically investigate the impact of polarisation mode dispersion on the efficiency of compensation of nonlinear transmission penalties for systems employing one of more inline phase conjugation devices. We will show that reducing the spacing between phase conjugations allows for significantly improved performance in the presence polarisation mode dispersion or a significant ...

2013
Bhupeshwaran Mani

Here we propose a model on EnhancedLarge Effective Area Fiber (E-LEAF) and Dispersion Compensation Module (DCM) with precise designed Dispersion Compensation Fiber (DCF). The Model is implemented in a long haul Single and Multichannel Optical telecommunication systems with E-LEAF as data transmission Fiber (NZ-DSF) of 1700Km (85 Km SMF×20 loops) length. The DCM is proposed in Symmetric Compensa...

2007
H. Nepf M. Ghisalberti B. White E. Murphy

Citation Nepf, H. et al. " Retention time and dispersion associated with submerged aquatic canopies. Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. The MIT Faculty has made this article openly available. Please share how this access benefits you. Your story matters. [1] The shear ...

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