A novel side-hole Highly Birefringent Photonic Crystal Fiber(HB-PCF) is proposed.Its phase modal birefringence at 1.55 μm in free space is as large as 2.916×10-3
the sensitivity of its phase modal birefringence to hydrostatic pressure is as high as-2.444×10-5 MPa-1 and the maximum measurable hydrostatic pressure value is 119.3 MPa.In addition
with ultra-low sensitivity to temperature
it is believed to be an excellent candidate for future applications in hydrostatic pressure measurement.