Title :
Two-step microfocal lens with enhanced optical coupling efficiency suitable for large-scale fabrication
Author :
Lingyun Miao ; Hsiang, Thomas Y.
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Rochester, Rochester, NY, USA
Abstract :
A two-step microfocal lens design that can achieve high-efficiency optical coupling is reported. Simulation results show that the lens enhances optical coupling efficiency by over one-third compared with its prototype previously reported. It also slightly reduces the focal spot size. A simple top-down fabrication process flow is discussed, which indicates that the proposed two-step lens can be fabricated at low cost using conventional industrial equipment.
Keywords :
microlenses; optical fabrication; conventional industrial equipment; enhanced optical coupling efficiency; large-scale fabrication; top-down fabrication process flow; two-step microfocal lens;
Journal_Title :
Micro & Nano Letters, IET
DOI :
10.1049/mnl.2014.0470