Fiber Bragg grating-based optical filters for high-resolution sensing: A comprehensive analysis

Ghosh, Biswajit; Mandal, Sanjoy

doi:10.1016/j.rio.2023.100441

Cited by 4 publications

(1 citation statement)

References 84 publications

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“…The operation of an FBG is based on the principle of "Fresnel reflection" that appears when a light wave is subjected to a change in the refractive index during its propagation in a waveguide [11]. Fiber gratings are longitudinal periodic or aperiodic disturbances on the index profile produced on a short part of a fiber core, allowing perturbations of its refractive index.…”

Section: B Optical Filter: Fiber Bragg Gratingmentioning

confidence: 99%

An experimental alternative of microwave signal generation through an optical heterodyning technique using a multimode laser diode and a tunable DFB laser

Zaldívar-Huerta,

Tshibangu Mbuebue,

García-Juárez

et al. 2024

IEEE Latin Am. Trans.

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Experimentally, an alternative technique to one of the classical optical heterodyning methods for generating microwave (MW) signals is demonstrated. The novelty of this approach lies in the utilization of a Multimode Laser Diode (MLD) in conjunction with a Fiber Bragg Grating (FBG) and a tunable Distributed Feedback (DFB) laser, rather than employing two DFB lasers. The FBG acts as an optical filter, enabling the selection of only one mode of the MLD. This selected mode serves as a reference in the optical beating process alongside the signal from the tunable DFB laser. Tuning is achieved by varying the wavelength of the DFB laser to modify the wavelength separation (Δλ) between the two optical modes. Experimental results are corroborated theoretically and through simulation. Performance evaluation of the system is conducted by measuring the signal-tonoise ratio (SNR) and the Phase Noise (PN) parameters.

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Section: B Optical Filter: Fiber Bragg Gratingmentioning

confidence: 99%

An experimental alternative of microwave signal generation through an optical heterodyning technique using a multimode laser diode and a tunable DFB laser

Zaldívar-Huerta,

Tshibangu Mbuebue,

García-Juárez

et al. 2024

IEEE Latin Am. Trans.

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Highly sensitive adulteration detection in kelulut honey utilizing fiber Bragg grating technology with Q-switched pulse erbium-doped fiber laser and innovative spider silk substrate

Muhammad,

Awang,

Talip

et al. 2024

Sensors and Actuators A: Physical

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Performance study of optical filters based on various optical components and their tuning mechanisms

Kumar,

Ranjan,

Kumar

et al. 2024

Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications XVII

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High speed photonic links require optical filter with high quality factor and free spectral range in GHz range. Such requirements motivate us to explore the characteristics of new configurations with various types of optical components and tuning mechanisms. In this work, different structures of dispersive elements are investigated to monitor the filtering scope of a microwave photonic link. The spectral characteristic of the optical filter is demonstrated in terms of normalized intensity and free spectral range. This study focusses on the various configurations with multiple number of optical components under test to reduce the ripple in the pass band of optical filter and to get linear phase response for distortion less transmission. The possible power tuning mechanism of the proposed structure is explained through various coupling coefficient and Mach-Zehnder interferometer structure. This helps in the design of tunable optical filters. Furthermore, the investigated elements are implemented in the design of optoelectronic oscillator for the generation of arbitrary shaped microwave signal. The chirping capability in the generated signal is introduced for energy efficient transmission of the signal in modern radar systems. The overall model is theoretically analyzed, and results are demonstrated through MATLAB simulations. The performance analysis of proposed optical components is demonstrated through microwave photonic link in Opti-System.

show abstract

Fiber Bragg grating-based optical filters for high-resolution sensing: A comprehensive analysis

Cited by 4 publications

References 84 publications

An experimental alternative of microwave signal generation through an optical heterodyning technique using a multimode laser diode and a tunable DFB laser

An experimental alternative of microwave signal generation through an optical heterodyning technique using a multimode laser diode and a tunable DFB laser

Highly sensitive adulteration detection in kelulut honey utilizing fiber Bragg grating technology with Q-switched pulse erbium-doped fiber laser and innovative spider silk substrate

Performance study of optical filters based on various optical components and their tuning mechanisms

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