Design and implementation of a passive edge filter with high bandwidth and slope

Yücel, Murat; Koyuncu, Onur

doi:10.1002/mop.31923

Cited by 3 publications

(2 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In addition, they exhibit a limited linear spectral response up to 2nm that remains unchanged, unless their temperature is varied through a temperature control system. Edge filters for FBG interrogation based on unpumped erbium doped fibers (EDFs) have also been proposed [11,12]. They exploit the linear region of the absorption spectrum of the EDF and in general suffer from low output power levels.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of an Erbium-Doped Fiber Ring Laser, as an Edge Filtering Device for FBG Sensor Interrogation

Stathopoulos,

Lazakis,

Simos

et al. 2024

Preprint

View full text Add to dashboard Cite

An easy to implement and cost-effective Fiber Bragg Grating (FBG) sensor interrogation technique based on a ring Erbium-Doped Fiber Laser (EDFL) topology is proposed and experimentally assessed. The FBG sensor is part of the EDFL cavity and must have a central wavelength located within the linear region of the EDF’s amplified spontaneous emission (ASE) spectrum which occurs between 1530 and 1540nm. In this manner, the wavelength-encoded response of the FBG under strain is converted to a linear variation of the laser output power, removing the need for spectrum analysis as well as any limitations from the use of external edge-filtering components. In addition, the laser linewidth is significantly reduced with respect to the FBG bandwidth thus improving the resolution of the system, whereas its sensitivity can be controlled through the pumping power. The performance of the system has been characterized by modeling and experiments for EDF's with different lengths, doping concentrations and pumping power levels. The influence of mode-hopping in the laser cavity on the resolution and accuracy of the system has also been investigated.

show abstract

Section: Introductionmentioning

confidence: 99%

Evaluation of an Erbium-Doped Fiber Ring Laser, as an Edge Filtering Device for FBG Sensor Interrogation

Stathopoulos,

Lazakis,

Simos

et al. 2024

Preprint

View full text Add to dashboard Cite

show abstract

“…For example, the amplification bandwidth of erbium doped fiber amplifiers (EDFAs) is around 20 nm in the C-band. With the help of filters, the amplification bandwidth was first increased 2 to 35 nm and then to 80 nm. As a result of these developments, although EDFAs can amplify at wavelengths between 1530 and 1610 nm in the C and L bands of the optical fiber, they still do not allow for a high transmission bandwidth of the optical fiber.…”

Section: Introductionmentioning

confidence: 99%

Solution of fiber Raman amplifier model using binary search equation-based adaptive artificial bee colony algorithm

2023

View full text Add to dashboard Cite

Due to the need for high bandwidth, there is growing interest in distributed fiber Raman amplifiers (FRA). In addition to having wide bandwidth, FRAs have the advantages of a low noise factor and simplicity of use. However, the optimization of the wavelength and power values of the pump lasers to be used in FRAs for a broadband and flat gain region is an important problem to be solved. In this study, a distributed FRA system was set using 100 signals with a 50-km propagation distance and 8 pump signals in the opposite direction, which were gain-flattened. The attenuation coefficient of SMF-28 type optical fiber was used in the system. First, optimum pump wavelengths and power levels were found by the binary search equation based adaptive artificial bee colony algorithm. Then, the FRA boundary value problem (BVP) was solved with the MATLAB BVP solver. Finally, the analytical Jacobian matrix required for the solution of the equation was included in the system, and faster and more effective results were obtained. The results show that the gain ripple of 100 optical signals was 0.5 dB at the maximum.

show abstract

Evaluation of an Erbium-Doped Fiber Ring Laser as an Edge Filtering Device for Fiber Bragg Grating Sensor Interrogation

Stathopoulos,

Lazakis,

Simos

et al. 2024

Photonics

View full text Add to dashboard Cite

An easy-to-implement and cost-effective Fiber Bragg Grating (FBG) sensor interrogation technique based on a ring Erbium-Doped Fiber Laser (EDFL) topology is proposed and experimentally assessed. The FBG sensor is part of the EDFL cavity and must have a central wavelength located within the linear region of the EDF’s amplified spontaneous emission (ASE) spectrum, which occurs at between 1530 and 1540 nm. In this manner, the wavelength-encoded response of the FBG under strain is converted to a linear variation in the laser output power, removing the need for spectrum analysis as well as any limitations from the use of external edge-filtering components. In addition, the laser linewidth is significantly reduced with respect to the FBG bandwidth, thus improving the resolution of the system, whereas its sensitivity can be controlled through pumping power. The performance of the system has been characterized by modeling and experiments for EDFs with different lengths, doping concentrations, and pumping power levels. The influence of mode-hopping in the laser cavity on the resolution and accuracy of the system has also been investigated.

show abstract

Design and implementation of a passive edge filter with high bandwidth and slope

Cited by 3 publications

References 14 publications

Evaluation of an Erbium-Doped Fiber Ring Laser, as an Edge Filtering Device for FBG Sensor Interrogation

Evaluation of an Erbium-Doped Fiber Ring Laser, as an Edge Filtering Device for FBG Sensor Interrogation

Solution of fiber Raman amplifier model using binary search equation-based adaptive artificial bee colony algorithm

Evaluation of an Erbium-Doped Fiber Ring Laser as an Edge Filtering Device for Fiber Bragg Grating Sensor Interrogation

Contact Info

Product

Resources

About