Title :
A Modified Bend-Resistant Multitrench Fiber With Two Gaps
Author :
Jiang Sun ; Yanhui Qi ; Zexin Kang ; Lin Ma ; Shuisheng Jian
Author_Institution :
Key Lab. of All Opt. Network & Adv. Telecommun. Network of EMC, Beijing Jiaotong Univ., Beijing, China
Abstract :
We propose and investigate a modified multitrench fiber (MTF) design with two gaps numerically through the scalar FD-BPM algorithm. Excellent potential in mode area scaling, suppression of high-order modes (HOMs), and resistance to bending is demonstrated. Loss ratio between HOMs and the fundamental mode is more than 50 possibly over a wide range of high-index-ring thickness, gap width, bending radius, and bending orientation. Therefore, the required fabrication accuracy decreases. At 1050-nm wavelength and 20-cm bend radius, large effective mode area (920 μm2 ) is achievable with high loss ratio (>100). The fabricating technologies, carving grooves in the ordinary MTF and inserting rods in these grooves, can be possibly used to fabricate our modified two-gap-MTF.
Keywords :
bending; finite difference methods; optical design techniques; optical fibres; optical losses; bending orientation; bending radius; gap width; high-index-ring thickness; high-order mode suppression; loss ratio; mode area scaling; modified bend-resistant multitrench fiber; scalar FD-BPM algorithm; size 20 cm; two-gap-MTF; wavelength 1050 nm; Fabrication; Frequency modulation; Indexes; Joints; Optical fiber amplifiers; Optical fiber networks; Bending loss; HOM suppression; fiber design; large mode area;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2015.2491651
