Mode field adaptation between single-mode fiber and large mode area fiber by thermally expanded core technique

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• 作者：Xuanfeng Zhou ; Zilun Chen ; Haihuan Chen ; Jie Li ; Jing Hou ; ^{houjing25@sina.com}
• 关键词：Large mode area fibers ; Thermally expanded core ; Mode field adaptation
• 刊名：Optics and Laser Technology
• 出版年：2013
• 出版时间：April, 2013
• 年：2013
• 卷：47
• 期：Complete
• 页码：72-75
• 全文大小：587 K

文摘

The main source of light transmission loss between single-mode fiber (SMF) and large mode area (LMA) fiber is from the mode field mismatch. Thermally expanded core (TEC) technique was introduced to realize mode field adaptation between them. The SMF was heated by a H₂-O₂ flame to increase the mode field diameter (MFD) which can result in a mode field match with LMA. Both numerical calculation and experiment results show it is workable to realize mode field adaptation and get a low transmission loss by this method. For HI1060 (d=5 ¦Ìm, NA=0.14) and LMA-GDF-15/130(d=15 ¦Ìm, NA=0.08), a low-loss with 0.4 dB was obtained for SMF-LMA-SMF from 6.4 dB with TEC processing experimentally.