Bragg wavelength shift for irradiated polymer fiber Bragg grating

Hamdalla, Taymour A.; Nafee, Sherif S.

doi:10.1016/j.optlastec.2015.06.008

Cited by 16 publications

(5 citation statements)

References 33 publications

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“…It is worth noticing that sometimes a red shift for the POFBGs is observed. Indeed, in a work dealing with the response of an FBG written with a CW UV laser (at 325 nm) in a PMMA fiber under neutron fluence with energy from 2 MeV to 10 MeV [ 128 ], the Bragg peak shifts towards the red and reaches 7 pm at the highest investigated TID of about 720 Gy.…”

Section: Radiation Effects On Fbgs In Exotic Fibersmentioning

confidence: 99%

Radiation Effects on Fiber Bragg Gratings: Vulnerability and Hardening Studies

Morana

Marin

Lablonde

et al. 2022

Sensors

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Fiber Bragg gratings (FBGs) are point optical fiber sensors that allow the monitoring of a diversity of environmental parameters, e.g., temperature or strain. Several research groups have studied radiation effects on the grating response, as they are implemented in harsh environments: high energy physics, space, and nuclear facilities. We report here the advances made to date in studies regarding the vulnerability and hardening of this sensor under radiation. First, we introduce its principle of operation. Second, the different grating inscription techniques are briefly illustrated as well as the differences among the various types. Then, we focus on the radiation effects induced on different FBGs. Radiation induces a shift in their Bragg wavelengths, which is a property serving to measure environmental parameters. This radiation-induced Bragg wavelength shift (RI-BWS) leads to a measurement error, whose amplitude and kinetics depend on many parameters: inscription conditions, fiber type, pre- or post-treatments, and irradiation conditions (nature, dose, dose rate, and temperature). Indeed, the radiation hardness of an FBG is not directly related to that of the fiber where it has been photo-inscribed by a laser. We review the influence of all these parameters and discuss how it is possible to manufacture FBGs with limited RI-BWS, opening the way to their implementation in radiation-rich environments.

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Section: Radiation Effects On Fbgs In Exotic Fibersmentioning

confidence: 99%

Radiation Effects on Fiber Bragg Gratings: Vulnerability and Hardening Studies

Morana

Marin

Lablonde

et al. 2022

Sensors

View full text Add to dashboard Cite

show abstract

“…net.LW (3,2) is the linked weights between the second hidden layer and the output data. net.LW (2, 1) is the linked weights between the fist hidden layer and the second hidden layer.…”

Section: Appendix Amentioning

confidence: 99%

“…In general, there are three kinds of optical fiber amplifiers that have already been reported for this band: (1) Fiber Raman amplifiers, which are based on stimulated Raman scattering; (2) S-band Erbium Doped Fiber Amplifier (EDFA) that is realized by forming a high population inversion [2] and (3) Thulium Doped Fiber Amplifier (TDFA) [3]. TDFA is the most promising candidate for the S-band because of its far superior to the other amplifiers with respect to power conversion efficiency [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Gain of irradiated S-band TDFA: Theoretical and ANN modeling based on experimental techniques

Hamdalla

2016

Optik

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“…To minimize FWHM, a chain of n-stages cascaded FBG is used. FBG has also many other applications in different fields, like irradiated polymers (Hamdalla and Nafee 2015) and in wavelength shift compensation under sea water (Mahran et al 2009).…”

Section: Introductionmentioning

confidence: 99%

Chromatic dispersion compensation by cascaded FBG with duobinary modulation scheme

et al. 2022

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In this paper, we propose a dispersion compensation model to minimize the chromatic dispersion to enhance system performance. The proposed model is based on applying the duobinary modulation scheme on 4-stages of cascaded identical apodized uniform fiber Bragg grating. Different apodization functions are tested to determine the one that provides the best performance. The proposed model is connected in three different connection schemes: pre, post and symmetrical, to get the best connection. To evaluate the performance of the proposed system, a comparative study is conducted using non-return to zero (NRZ) and modified duobinary (MDB) modulation schemes. For evaluation, a 10 Gbps WDM link is simulated at a distance of 100 km under a set of predefined operating parameters. Optisystem 17.0 is used for simulation and evaluation. Both quality factor (Q-factor) and bit error rate (BER) are used as performance indices. All cases of NRZ modulation scheme do not meet the minimum operational requirements in terms of Q-factor and BER. Only in the case of MDB modulation scheme, the symmetrical compensation with tanh apodization meets the minimum operational requirements with a Q-factor of 6.39 and BER of 8.44 × 10–11. The proposed model achieves better results as compared to the other modulation schemes: a maximum Q-factor values of 8.964 and a BER of 1.3 × 10–19 with tanh apodization in the pre-compensation scheme. As compared to related work, the system performance achieves ~ 99% improvement.

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Bragg wavelength shift for irradiated polymer fiber Bragg grating

Cited by 16 publications

References 33 publications

Radiation Effects on Fiber Bragg Gratings: Vulnerability and Hardening Studies

Radiation Effects on Fiber Bragg Gratings: Vulnerability and Hardening Studies

Gain of irradiated S-band TDFA: Theoretical and ANN modeling based on experimental techniques

Chromatic dispersion compensation by cascaded FBG with duobinary modulation scheme

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