scholarly journals Influence of Even-Order Dispersion on Super-Sech Soliton Transmission Quality under Coherent Crosstalk

2008 ◽  
Vol 2008 ◽  
pp. 1-5 ◽  
Author(s):  
Aleksandra Panajotovic ◽  
Daniela Milovic ◽  
Anjan Biswas ◽  
Essaid Zerrad
Keyword(s):  
Fourth Order ◽  
Optical Network ◽  
Single Mode ◽  
Single Mode Fiber ◽  
Higher Order ◽  
Trailing Edges ◽  
Even Order ◽  
Transmission Quality ◽  
The Impact ◽  
Order Dispersion

The transmission speed of optical network strongly depends on the impact of higher order dispersion. In presence of coherent crosstalk, which cannot be otherwise controlled by optical filtering, the impact of higher order dispersions becomes more pronounced. In this paper, the general expressions, that describe pulse deformation due to second- and fourth-order dispersions in a single-mode fiber, are given. The responses for such even-order dispersions, in presence of coherent crosstalk, are characterized by waveforms with long trailing edges. The transmission quality of optical pulses, due to both individual and combined influence of second- and fourth-order dispersions, is studied in this paper. Finally, the pulse shape and eye diagrams are obtained.

scholarly journals Polarization Division Multiplexing of OFDM Radio-over-Fiber Signals in Passive Optical Networks

2014 ◽  
Vol 2014 ◽  
pp. 1-9 ◽  
Author(s):  
Maria Morant ◽  
Joaquin Pérez ◽  
Roberto Llorente
Keyword(s):  
Optical Networks ◽  
Spectral Efficiency ◽  
Optical Network ◽  
Single Mode ◽  
Single Mode Fiber ◽  
Radio Over Fiber ◽  
Passive Optical Network ◽  
Passive Optical Networks ◽  
The Impact ◽  
Polarization Division Multiplexing

This paper describes the state-of-the-art of polarization multiplexing for optical networks transmission. The use of polarization division multiplexing (PDM) permits to multiply the user capacity and increase the spectral efficiency. Combining PDM and orthogonal frequency division multiplexed (OFDM) modulation allows maximizing the optical transmission capacity. The experimental demonstration of transmitting OFDM signals following ECMA-368 ultrawide band (UWB) standard in radio-over-fiber using PDM in passive optical networks is herein reported. The impact of cross-polarization and cochannel crosstalk is evaluated experimentally in a three-user OFDM-UWB subcarrier multiplexed (SCM) configuration per polarization. Each SCM uses up to three OFDM-UWB channels of 200 Mbit/s each, achieving an aggregated bitrate of 1.2 Gbit/s with 0.76 bit/s/Hz spectral efficiency when using PDM transmission. The experimental results for the polarization-multiplexed SCM indicate that a 4 dB additional polarization crosstalk interference can be expected compared to a nonpolarization-multiplexed transmission system which translates to 2.4 dB EVM penalty in the UWB signals. The successful PDM transmission of SCM multiuser OFDM-UWB over a passive optical network of 25 km standard-single mode fiber (SSMF) reach is demonstrated.

Study on fundamental and higher order soliton with and without third-order dispersion near zero dispersion point of single mode fiber

2014 ◽  
Vol 23 (03) ◽  
pp. 1450028 ◽  
Author(s):  
Bhupeshwaran Mani ◽  
K. Chitra ◽  
A. Sivasubramanian
Keyword(s):  
Spectral Characteristics ◽  
Single Mode ◽  
Single Mode Fiber ◽  
Higher Order ◽  
Original Position ◽  
Third Order ◽  
Third Order Dispersion ◽  
Dispersion Wavelength ◽  
Adjacent Position ◽  
Order Dispersion

In this work, we study the effect of fundamental and higher order soliton with and without the presence of third-order dispersion (TOD, β3). The effect is studied near the zero dispersion wavelength of 1270 nm with second-order dispersion (β2) value of 0.22 ps2/km for various third-order dispersion parameter sweeps from 0.01 to 0.1 ps3/km. The theme of temporal pulse displacement due to TOD is studied for 10 and 20 soliton periods for fundamental soliton and 10 soliton period for higher order soliton (N = 2). The effective pulse width of 1 ps (FWHM) is displaced from its original position to adjacent position depending upon the TOD value. It is found in both fundamental and higher order soliton, that the displacement in higher for TOD value of 0.1 ps3/km than 0.01 ps3/km. The effect of displaced fundamental soliton pulse is pictured with respect to the transmitted distance (different soliton period) and TOD. The spectral characteristics of higher order soliton is also analyzed which is one of the characteristic mechanisms for supercontinuum generation.

scholarly journals Extinction Ratio and the Fiber Optic Transmission Networks

2021 ◽  
Vol 12 (6) ◽  
pp. 2244-2252
Author(s):  
Ved Nath Jha, Supriya Rani, Ved Nath Jha
Keyword(s):  
Optical Fiber ◽  
Fiber Optic ◽  
Optical Network ◽  
Extinction Ratio ◽  
Wavelength Division Multiplex ◽  
Single Mode ◽  
Fiber Amplifier ◽  
Single Mode Fiber ◽  
Erbium Doped Fiber Amplifier ◽  
Fiber Network

In the fiber optic communication network for example,- FTTH, EPON, NBN, OTN and so on, the most important components are fiber length between transmitter and receiver point. So, to make, cheap and meaningful communication through optical fiber it must be required to calculate how and what amount of signal is transmitted with the given length of the fiber. Finally, it is said that the optical fiber network have several limitations like extension ratio. So, it is necessary to investigate its affect on the performance of the Optical Network. This research is based on simulation by OptiSystem 0.17 on the basis of Dense wavelength division multiplex (DWDM) technology, Erbium Doped Fiber Amplifier (EDFA), dispersion Compensating Fiber (DCF) and single mode fiber of length 50–100 km.

The Impact of Higher Order Dispersion in a Time Lens based WDM Transmitter

2020 ◽  
Author(s):  
X. Xu ◽  
M. Lillieholm ◽  
P. D. Girouard ◽  
P. D. Ekner ◽  
M. Galili ◽  
...  
Keyword(s):  
Higher Order ◽  
The Impact ◽  
Higher Order Dispersion ◽  
Order Dispersion

Long-Reach Transmission Characteristics of Tunable External Cavity Laser

2015 ◽  
Vol 15 (10) ◽  
pp. 7462-7466
Author(s):  
Su Hwan Oh ◽  
Ki-Hong Yoon ◽  
Seung-Hyun Cho ◽  
Jun-Kyu Seo
Keyword(s):  
Tuning Range ◽  
Optical Network ◽  
External Cavity ◽  
Single Mode ◽  
Single Mode Fiber ◽  
Bragg Reflector ◽  
Passive Optical Network ◽  
Lasing Spectrum ◽  
External Cavity Laser ◽  
Cavity Laser

We report the transmission capability of a tunable external cavity laser (T-ECL) that utilizes a super-luminescent diode (SLD) and a polymer Bragg reflector (PBR) operating with a direct modulation of 2.5 Gb/s for a light source of a long-reach wavelength division multiplexed-passive optical network (WDM-PON). The T-ECL successfully operated at an ambient temperature of −20 °C to 70 °C when employing a cooled SLD. A tuning range of 12-nm is achieved with a tuning power of lower than 80 mW. A side mode suppression ratio of more than 35 dB was obtained for the whole tuning range. The linewidth of the lasing spectrum is less than 0.1 nm at 20 dB from the peak power. The transmission performance of the T-ECL, including an optical bandpass filter (OBPF), is better than that of the T-ECL excluding an OBPF for a long-reach transmission over 80 km of single mode fiber (SMF). The power penalty of the T-ECL is less than 1.4 dB when using an OBPF for an 80-km transmission.

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