Photonic crystal fiber with a flattened fundamental mode for the fiber lasers

✍ Scribed by Chun-can Wang; Fan Zhang; Yu-chun Lu; Chu Liu; Rui Geng; Ti-gang Ning

• Book ID: 103874195
• Publisher: Elsevier Science
• Year: 2009
• Tongue: English
• Weight: 659 KB
• Volume: 282
• Category: Article
• ISSN: 0030-4018
• DOI: 10.1016/j.optcom.2009.02.049

✦ Synopsis

The 1-hole-missing and 7-hole-missing photonic crystal fibers (PCFs) with flattened fundamental modes (FMs) are proposed by introducing a layer of up-doped silica into the core of the PCFs. The transverse mode competitions are compared between the 7-hole-missing PCF lasers with and without flattened-FMs. The numerical results show that the flattened-FM PCF lasers can support the single transverse mode operation, even for a large value of the ratio of air hole diameter to the spacing between holes (up to 0.53).