A Modified Bend-Resistant Multitrench Fiber With Two Gaps

作者：Sun Jiang^*; Qi Yanhui; Kang Zexin; Ma Lin; Jian Shuisheng

来源：Journal of Lightwave Technology, 2015, 33(23): 4908-4914.

DOI：10.1109/JLT.2015.2491651

• Bending loss
• fiber design
• HOM suppression
• large mode area

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-indexring 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 mu m(2)) 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.

• 出版日期2015-12-1
• 单位北京交通大学