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. 2020 Jun 8;20(11):3266. doi: 10.3390/s20113266

Figure 3.

Figure 3

(a) The configuration of proposed highly birefringent microstructured optical fiber (MOF). (b) x-polarized and y-polarized core mode pattern of the SPR sensor (d1/d2 = 0.4) (Figure adapted with permission from reference [31]). (c) Attenuation spectra of highly birefringent MOF when d1/d2 = 0.95 and (d) d1/d2 = 0.4. (e) The variation of wavelength offset along with phase birefringence. (Inset) The x-polarized core mode pattern. (f) The SPR sensitivities when d1/d2 = 1.0, 0.6, 0.5 and 0.4 respectively. (Inset) The x-polarized core mode (Figure adapted with permission from reference [32]).