Sensing and Demodulation of Special Long-Period Fiber Gratings Induced by Scanning CO_𝟐 Laser Pulses

Figure 12

Refractive index response of the G-ULPFG [4]. (a) Spectra of resonant peak ^𝑁1LP₀₃. (b) Spectra of resonant peak ^𝑁2LP₀₁. (c) Wavelength shift of resonant peaks ^𝑁1LP₀₃ and ^𝑁2LP₀₁.

(a)

(b)

(c)