Citation:
M. Blau and D. M. Marom, “Optimization of Spatial Aperture-Sampled ModeMultiplexer for a Three-Mode Fiber,” Photonics Technology Letters, vol. 24, no. 23, pp. 2101-2104, 2012.
Abstract:
An optimization procedure for spatial mode multiplexing from individual single-mode fibers into a three-mode fiber based on a spatial aperture sampling concept has been developed. By placing space-variant imaging elements between the single-mode and few-mode fibers, each beam aperture can be shaped for lower loss coupling and low mode-dependent losses. The optimization achieves a record theoretical −1.5-dB insertion loss, improving on the previous theoretical −2-dB record.