Phase to Intensity Modulation Conversion by Third-Order Dispersion and Its Effect on Group Velocity Dispersion Measurement Using Phase-Modulated CW Light

2010 ◽  
Author(s):  
Takashi Yamamoto ◽  
Taiji Sakamoto ◽  
Shigeru Tomita
Keyword(s):  
Group Velocity ◽  
Velocity Dispersion ◽  
Group Velocity Dispersion ◽  
Intensity Modulation ◽  
Third Order ◽  
Third Order Dispersion ◽  
Dispersion Measurement ◽  
Order Dispersion

Silicon Nanowire Embedded Spiral Photonic Crystal Fiber for Soliton-Effect Pulse Compression

2014 ◽  
Vol 938 ◽  
pp. 316-321
Author(s):  
E. Gunasundari ◽  
K. Senthilnathan ◽  
S. Sivabalan ◽  
K. Nakkeeran ◽  
P. Ramesh Babu
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Pulse Compression ◽  
Velocity Dispersion ◽  
Group Velocity Dispersion ◽  
Silicon Nanowire ◽  
Third Order ◽  
Crystal Fiber ◽  
Third Order Dispersion ◽  
Order Dispersion

In this paper, we propose a new type of optical waveguide called silicon nanowire embedded equai-angular spiral photonic crystal fiber (SN-SPCF) using fully vectorial finite element method, where closely arranged arrays of air holes act as cladding and nanosize silicon material at the centre acts as core. We show that the proposed nanowire embedded PCF of 400 nm core diameter exhibits high anomalous group velocity dispersion (-3148 ps2/km), small third order dispersion (-8.6591 ps3/km) and high nonlinearity (443.2 W-1m-1) at 1550 nm wavelength. Soliton-effect pulse compression of femtosecond pulses in a silicon nanowire-spiral photonic crystal fiber at 1550 nm is numerically studied. We demonstrate a pulse compression of 75 fs input pulse to about 4 fs by the simultaneous actions of both linear effects (a large anomalous group velocity dispersion and a small third order dispersion) and the nonlinear effect (an effective high nonlinearity).

Highly negative dispersion compensating fiber with low third order dispersion

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Md. Ibadul Islam ◽  
Md Saiful Islam
Keyword(s):  
Group Velocity Dispersion ◽  
Chromatic Dispersion ◽  
Third Order ◽  
Crystal Fiber ◽  
Negative Dispersion ◽  
Third Order Dispersion ◽  
Sensing Applications ◽  
Effective Mode Area ◽  
Mode Area ◽  
Order Dispersion

AbstractIn this work, a dispersion compensating photonic crystal fiber (DC-PCF) is proposed in which dispersion, dispersion slope, second order dispersion, third order dispersion, nonlinearity, effective mode area, V parameter are investigated. The suggested structure is very effective for compensating of chromatic dispersion about −951 to −3075.10 ps/(nm.km) over 1340–1640 nm wavelength bandwidth. With perfectly matched layer boundary condition, guiding properties are inspected applying finite element method (FEM). The investigated results conform the opportunity of large negative dispersion and high group velocity dispersion (GVD) of −2367.10 ps/(nm.km) and 3018.55 ps2/km respectively, at 1550 nm operating wavelength. The offered fiber also shows low third order dispersion about −637.88 ps3/km, high nonlinearity of 91.11 W−1 km−1. From overall simulation results, it can be expected that the suggested PCF will be an effective candidate in high bit rate long haul optical communication system as well as sensing applications.

Group velocity and third-order dispersion comparison in externally and directly modulated radio over fiber link

2019 ◽  
Vol 48 (3) ◽  
pp. 332-339
Author(s):  
R. S. Asha ◽  
V. K. Jayasree ◽  
Mhatli Sofien ◽  
Xavier Fernando
Keyword(s):  
Group Velocity ◽  
Radio Over Fiber ◽  
Third Order ◽  
Third Order Dispersion ◽  
Fiber Link ◽  
Order Dispersion
Sign in / Sign up

Export Citation Format

Share Document