Improved High Birefringence Photonic Crystal Fiber With Low Confinement Loss

In this paper high birefringence and low confinement loss photonic crystal fiber with single mode operation is proposed. The birefringence is largely dependent on degree of irregularity and fiber design parameters. The numerical result show that improved PCF possesses the properties of high birefringence, low confinement loss and single mode operation. By inserting the asymmetry in cladding region, model birefringence increases greatly in comparison to original PCF and confinement loss is about 104 times smaller.