Proposal for an Ultra-high Birefringent Photonic Crystal Fiber with Large Nonlinearity - Abdullah, Md. Iqbal Hossain; Hasan, Md. Ishtiaq; Rahman, Md. Nafiz Ahbabur; Awsaf, Md. Aseer; Mia, Mohammad Mahmudul Alam; Hakim, Md Shahrier (International Journal of Advance Research and Innovative Ideas In Education, 2017)