Title :
Design of All-Solid Bandgap Fiber With Improved Confinement and Bend Losses
Author :
Ren, Guobin ; Shum, Ping ; Zhang, Liren ; Yan, Min ; Yu, Xia ; Tong, Weijun ; Luo, Jie
Author_Institution :
Network Tech Res. Centre, Nanyang Technol. Univ., Singapore
Abstract :
We propose a new design of low-contrast all-solid bandgap fiber with low confinement and bend losses within low-order bandgaps. By introducing an index depressed layer around the high index rod in fiber cladding, we theoretically predict that the confinement loss of the proposed all-solid bandgap fiber would be significantly improved. Due to the enlarged index mismatch of the guided core mode and the edge of the bandgaps, the critical bend radius of the proposed fiber is remarkably reduced
Keywords :
bending; optical design techniques; optical fibre cladding; optical fibre losses; photonic band gap; refractive index; all-solid bandgap fiber; bandgap edge; bend losses; confinement loss; critical bend radius; fiber cladding; guided core mode; high index rod; index mismatch; low-contrast fiber; low-order bandgaps; optical confinement; Optical arrays; Optical fiber cables; Optical fiber losses; Optical fibers; Optical materials; Optical waveguides; Photonic band gap; Photonic bandgap fibers; Photonic crystal fibers; Silicon compounds; Bend loss; confinement loss; photonic bandgap; photonic crystal fiber;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2006.887227
