A novel technique for optical dense comb filters using sampled fiber Bragg gratings

“…[6] for switching application the result is carried out using software package, but analytical calculation is missing for verification. Effect of side lobe outside the desired region is measured by Ashry et.al [7] for sensing application though magnitude of side lobe is quite high. Wideband chirped fibre Bragg grating for dispersion compensation is investigated by William et.al [8].…”

Section: Introductionmentioning

confidence: 99%

Calculating Reflectivity of Fiber Bragg Grating for Different Apodization Techniques

Halder¹,

Deyasi²

2017

MMC_A

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In this paper reflectivity spectra of fiber Bragg grating structure for different appodization techniques are computed and plotted as a function of operating wavelength with 1.55nm central value. Computation is made using coupled mode approach and variation of index change is considered as the turning parameter along with grating length. Result is compared with that obtained in absence of appodization thus variation of bandwidth due to deformation in wave shape is investigated. Simulated results are critically important for calculating reflectivity for practical application.

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“…In optical communication, FBG is used as a dispersion compensator [1] to produce a long-range data transmission, with or without an amplifier. This is also applied in optical filters [2], [3], filtering the transmitted wavelengths due to periodic changes in the grating, as well as increasing and reducing in wavelength division multiplexing communication, a technology with the ability to combine several optical TELKOMNIKA Telecommun Comput El Control  Apodization sensor performance for TOPAS fiber Bragg grating (Toto Saktioto) 1983 signals onto one fiber, using various light and laser wavelengths, to allow bidirectional communication within a single fiber, in optical sensing or monitoring applications [4]- [6].…”

Section: Introductionmentioning

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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A novel technique for optical dense comb filters using sampled fiber Bragg gratings

Cited by 14 publications

References 15 publications

Theoretical Analysis of Sampled Bragg Grating with a Chirp in Sampling and Grating Period for Dispersion Compensation Applications

Theoretical Analysis of Sampled Bragg Grating with a Chirp in Sampling and Grating Period for Dispersion Compensation Applications

Calculating Reflectivity of Fiber Bragg Grating for Different Apodization Techniques

Apodization sensor performance for TOPAS fiber Bragg grating

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