Discretely tunable narrow linewidth fiber ring laser based on matching the transmission spectra of two fiber Bragg grating Fabry-Perot filters A novel narrow linewidth, discretely tunable and stable fiber ring laser based on the matching of the transmission spectra of two fiber Bragg grating Fabry-Per...
Erdogan T 1997 Fiber grating spectra J. Lightw. Technol. 8 1277-93Erdogan T 1997 Fiber grating spectra J. Lightwave Technol. 15 1277-1294T. Erdogan: Fiber grating spectra, Journal of Lightwave Technology, vol. 15, pp. 1277-1294, 1997....
Such regular standing waves series create also significant reflection grating through resonant index change of the rare-earth doped core. We show analysis of the transient gratings spectra, including the effect of superimposed gratings. The numerical model of the fiber laser accounts for the effect ...
To understand fiber grating spectra we first discuss a ‘uniform’ Bragg grating, of length L. Such a grating has uniform index modulation along its length and is shown in Figure 4a. Depending on the length and refractive index modulation of the grating, it may be classified as either weak ...
Effects of fabrication conditions on the double-peak structure observed in fiber Bragg gratings at harmonics of the Bragg wavelength were investigated, showing that slight variations in the alignment of the phase mask can affect the grating spectra significantly. A single peak occurs only when the in...
Fiber grating spectra Journal of Lightwave Technology (1997) B.J. Eggleton et al. Cladding-mode-resonances in air–silica microstructure optical fiber Journal of Lightwave Technology (2000) J.M. Corre et al. Design of pH sensors in long-period fiber gratings using polymetric nanocoatings IEEE Se...
where \(N_{{\rm core}}^{{\rm eff}}\) is the effective index of the input core mode and Λ is the period of the grating (measured along the fiber axis, i.e., not equal to the distance between the tilted grating planes). As can be seen in the measured spectra in Fig. 7 (le...
The genetic algorithm retrieves the changes in the characteristics of the sensor from the measured spectra information by encoding the refractive index or the grating period distribution along the Bragg grating into the genes. Moreover, the effects of the simultaneously applied transversal and ...
A highly-reflective fiber Bragg grating (FBG, R > 99%, 200 pm spectral width around 1040 nm, IxFiber, Inc) fusion-spliced at one end and the right-angle-cleaved fiber at the other end ensure laser oscillation at λl = 1040 nm. Figure 1: Experimental setup. Laser ...
Location of 10 mm grating is shown in sketch of specimen. Experimental grating spectral data in transmission (solid lines) are shown for three load levels (P). The simulated spectra calculated using the transfer matrix method are also plotted (dashed lines). Finally, while FBGs reflect or ...