We experimentally demonstrate all-solid 30 and 90 μm core diameter multi-trench fibers. Measurements ensure an effective single-mode operation over a wide range of bend radius in the case of 30 μm core fiber, making it suitable for applications like beam delivery and compact fiber lasers. On the other hand, a 90 μm core fiber ensures an effective single-mode operation and shows good potential for rod-type fiber laser applications. Both fibers were fabricated by the conventional modified chemical vapor deposition process in conjunction with the rod-in-tube technique, hence making them suitable for mass production.
© 2014 Optical Society of America
Fiber Optics and Optical Communications
Original Manuscript: July 1, 2014
Manuscript Accepted: July 28, 2014
Published: August 28, 2014
Deepak Jain, Yongmin Jung, Jaesun Kim, and Jayanta K. Sahu, "Robust single-mode all-solid multi-trench fiber with large effective mode area," Opt. Lett. 39, 5200-5203 (2014)