AU - zendehnam, Akbar AU - hosseinpour, Maryam TI - The Influence of Variation in Effective Parameters on Confinement Loss In Photonic Crystal Fibres PT - JOURNAL ARTICLE TA - opsi JN - opsi VO - 20 VI - 0 IP - 0 4099 - http://opsi.ir/article-1-247-en.html 4100 - http://opsi.ir/article-1-247-en.pdf SO - opsi 0 AB  - In this research , the impressions of both rising the number of edges in cladding region ( from square – lattice up to nano structure) and the number of air rings as well as variation in the used telecomm wavelengths on the confinement loss for large amounts of air-filling fraction are studied . The achievements show extra increasing the number of edges cannot be beneficial so that it rises the loss . Also , it is obtained that the increment of the air – filing fraction can reduce and revise the amount of loss considerably for all considered structures . CP - IRAN IN - LG - eng PB - opsi PG - 517 PT - Research YR - 2014