Measurements of sensitivity to hydrostatic pressure and temperature in highly birefringent photonic crystal fibers

Abstract

We report on experimental studies of polarimetric sensitivity to hydrostatic pressure and temperature in two highly birefringent index guided photonic crystal fibers, in which birefringence is induced by one row of the cladding holes with diameters smaller than the other cladding holes. The sensitivity measurements were carried out in the spectral range from 0.6 µm to 1.6 µm. Our results show that absolute value of the polarimetric sensitivity to hydrostatic pressure can reach 23 rad/MPa×m, which is almost one order of magnitude higher than in conventional fibers with elliptical core. Simultaneously, polarimetric sensitivity to temperature is at least two orders of magnitude lower than in conventional highly birefringent fibers. Moreover, we proved experimentally that one of the investigated fibers is completely insensitive to temperature at certain wavelength.

Investigations of birefringence of the fundamental and the higher order modes in index guiding photonic crystal fiber

“…The construction of the investigated fibers was optimized in order to assure a minimum number of the cladding holes and simultaneously to keep the confinement losses of the fundamental mode below 1 dB/km in the spectral range from 0.4 to 1.6 µm 12 . Additionally, modal birefringence and polarimetric sensitivities to temperature and hydrostatic pressure of the fundamental mode in similar fibers were measured in 13 . The fibers investigated in 13 were drawn from the same perform as the one shown in Fig.1 and differ only in outside diameters, which was equal to 125 µm and 110 µm, respectively.…”

“…Additionally, modal birefringence and polarimetric sensitivities to temperature and hydrostatic pressure of the fundamental mode in similar fibers were measured in 13 . The fibers investigated in 13 were drawn from the same perform as the one shown in Fig.1 and differ only in outside diameters, which was equal to 125 µm and 110 µm, respectively. …”

Measurement of Membrane Displacement with a Motionless Camera Equipped with a Fixed Focus Lens

“…The parameters of the membrane displacement are determined then by measuring other physical quantities. For this reason attempts are made to use fibre pressure sensors [4,5], piezofoils [3], the Helmholtz resonator [6,7], optical [8][9][10][11][12] and capacitive sensors [13,14]. When the dimensions of the sensor do not impose significant limitations, a fluorescence videogrammetry [15] can be used as well as the method described in [16].…”

Pressure and temperature sensor based on a dual core photonic quasi-crystal fiber

“…In the future for optical networks, the PCF coupler is the most important component which is mainly based on PCF devices. Realization of multi-core specifically, dual-core PCFs [10][11][12][13] has enabled a new efficient way of designing PCF couplers, wavelength multiplexers and de-multiplexers, polarization splitters, narrow band pass filters, and sensors [13][14][15][16][17][18][19][20][21][22][23][24][25]. Dual-core PCF couplers have many advantages over the conventional optical couplers.…”