Apodized chirped fiber Bragg grating for postdispersion compensation in wavelength division multiplexing optical networks

Sayed, Ahmed F.; Mustafa, Fathy M.; Khalaf, Ashraf A. M.; Aly, Moustafa H.

doi:10.1002/dac.4551

Cited by 26 publications

(3 citation statements)

References 18 publications

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“…The proposed work is novel but not performed well. Sayed et al [27] proposed a system of 110km length of optical fiber using CFBG with hamming apodization function. Q-factor using hamming apodization function is 8.27 which is best compared to other apodization functions.…”

Section: Literature Reviewmentioning

confidence: 99%

Investigation of long-haul optical transmission systems: diverse chirped FBGs with DCF for 300km length of SMF

2022

IJATEE

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Further, DCF and FBG techniques are reported to conflict the dispersion or PWB in optical fiber transmission system (OFTS) by selecting the different location as pre, post, and symmetric compensation [1113]. The comparative analysis for different long-haul optical transmission system has also been designed through DCF and FBGs techniques. It has been observed that the DCF and FBG give good performance [10]. Furthermore, comparative analysis of different hybridizationdispersion-compensation techniques like chirped fiber Bragg grating (CFBGs), DCF+FBG, optical phase conjugation (OPC) +DCF, FBG+DCF+OPC are available in the literature. These techniques overcome the dispersion phenomena, but the cost of system increases [1, 5, 1420]. According to the literature [1120], most of the investigations emphasize on DCF, FBG, OPC+DCF and DCF+FBG techniques as dispersion compensator, but the cost of implementation is still high and challengeable. It is also observed that the performance of OFTS system

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Section: Literature Reviewmentioning

confidence: 99%

Investigation of long-haul optical transmission systems: diverse chirped FBGs with DCF for 300km length of SMF

2022

IJATEE

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“…Another advantage is the rapid, accurate, and relatively stable transmission of data to environmental conditions, compared to conventional cables. Therefore, optical fibers are useful for transmitting data across continents with susceptibility to electromagnetic waves, resulting in no wave interference, resistance to high temperatures, small transmissive attenuation, and large bandwidth [28].…”

Section: Theoretical Considerationmentioning

confidence: 99%

Apodization sensor performance for TOPAS fiber Bragg grating

et al. 2021

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Optical sensors have more capabilities than electronic sensors, and therefore provide extraordinary developments, including high sensitivity, nonsusceptibility to electromagnetic wave disturbances, small size, and multiplexing. Furthermore, fiber Bragg grating (FBG) is an optical sensor with a periodically changing grating refractive index, susceptible to strain and temperature changes. As a sensor, FBG's performance required to optimize and improve the numerical apodization function and affect the effective refractive index is considered. The grating fiber's apodization function can narrow the full width half maximum (FWHM) and reduce the optical signal's side lobes. In all the apodization functions operated by FBG, Blackman has the highest sensitivity of 15.37143 pm/°C, followed by Hamming and Gaussian, with 13.71429 pm/°C and 13.70857 pm/°C, respectively, and Uniform grating fiber with the lowest sensitivity of 12.40571 pm/°C. Hamming, Uniform, and Blackman discovered the sensitivity for a strain to be 1.17, 1.16, and 1.167 pm/microstrain, respectively. The results obtained indicated that apodization could increase FBG's sensitivity to temperature and strain sensors. For instance, in terms of other parameters, FWHM width, Hamming had the narrowest value of 0.6 nm, followed by Blackman with 0.612 nm, while Uniform had the widest FWHM of 1.9546 nm.

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“…Such r.i. modifications inside the core of the fiber have led to the formation of many optical devices for sensing and communications purposes [3][4][5][6][7][8][9][10][11]. Although FBGs have been extensively used for different purposes, utilizing them to improve the optical transmission link performance has revolutionized the telecommunication industry [12][13][14][15][16][17]. Hence, nowadays, researchers are using cascaded FBG structures in optical communication systems to enhance its performance by reducing the spectral width of the laser source, thus reducing the dispersion [18,19].…”

Section: Introductionmentioning

confidence: 99%

Performance enhancement of optical communication system with cascaded FBGs of varying lengths

Naga Bhaskar,

Pal,

Pattnaik

2023

J. Opt.

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In this paper, an optical communication system constructed with cascaded fiber Bragg gratings or FBGs of varying lengths capable of operating in the C-band is presented. Here, initially, a passive optical device formed with four cascaded FBGs of varying lengths is proposed and analysed. Subsequently, the proposed device is kept in the optical communication system to reduce the spectral widthof the source, thereby enhancing the system's performance. Analytical formulation based on the transfer matrix method (TMM) of an optical device is incorporated. The effect of such a device on the system performance at various operating distances is discussed. Further, the system performance is studied with the apodized FBGs in the passive optical device. At the end, we investigated the effect of incorporating the cascaded FBG structure in the system utilizing four-level pulse amplitude modulation or PAM-4 modulation . As per the simulation results, the proposed device has given a maximum reflectivity of 98.39% and a minimum FWHM of 0.175 nm for uniform FBGs. But with the apodized FBGs, an FWHM of 0.07 nm with a reflectivity of 59.81% has been achieved. Simulation results reveal that the system formed with the proposed device has given better performance up to a distance of 105 km compared to the absence of the device. At the maximum operating distance of the system with apodized FBGs, the Q-factor and bit error rate (BER) are recorded as 6.712 and 9.5321×10-12, respectively. Apart from the Q-factor and BER estimation, eye height is also used to estimate the system performance at various operating distances.

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Apodized chirped fiber Bragg grating for postdispersion compensation in wavelength division multiplexing optical networks

Cited by 26 publications

References 18 publications

Investigation of long-haul optical transmission systems: diverse chirped FBGs with DCF for 300km length of SMF

Investigation of long-haul optical transmission systems: diverse chirped FBGs with DCF for 300km length of SMF

Apodization sensor performance for TOPAS fiber Bragg grating

Performance enhancement of optical communication system with cascaded FBGs of varying lengths

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