A Novel Photonic Crystal Fiber Design for Large Effective Area and High Negative Dispersion

Nguyen Hoang HAI  Yoshinori NAMIHIRA  Feroza BEGUM  Shubi F. KAIJAGE  Tatsuya KINJO  S.M. Abdur RAZZAK  Nianyu ZOU  

Publication
IEICE TRANSACTIONS on Electronics   Vol.E91-C   No.1   pp.113-116
Publication Date: 2008/01/01
Online ISSN: 1745-1353
DOI: 10.1093/ietele/e91-c.1.113
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Optoelectronics
Keyword: 
photonic crystal fiber,  large effective area,  negative dispersion,  finite difference method,  

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Summary: 
In this paper, we propose and demonstrate a novel type of PCF that has two cladding layers with Ge rods at the center core. We numerically show that it is possible to design a single mode PCF with large effective area greater than 200 µm2 over the whole wavelength above 1.2 µm. The proposed large mode area PCF (LMA-PCF) exhibits a high negative dispersion coefficient from -186 to -158 [ps/(nm-km)] in all wavelengths ranging from 1.2 µm to 1.8 µm. Effective single mode operation of LMA-PCF is confimed for the entire band of interest.