Title :
Novel high-efficiency concentrator for optical fiber communication
Author :
Nakamaru, Fumio ; Matsumoto, Yoshinori ; Nakazono, Akimichi
Author_Institution :
Dept. of Appl. Phys. & Physico-Informatics, Keio Univ., Yokohama, Japan
fDate :
7/1/2002 12:00:00 AM
Abstract :
A novel high-efficiency concentrator based on nonimaging optics has been designed and fabricated with micromachining technique. The shape of the concentrator utilizes compound parabolic concentrator (CPC), which can concentrate the all rays that have the angles less than a critical angle /spl theta//sub c/. The theoretical concentration efficiency was calculated by ray trace simulation considering the reflectance of the concentrator´s reflective layer. The metal reflection layer of reflectance 95% was formed by gold-nickel mirror plating method in a glass hole. As a result, the concentration efficiency of the concentrator was measured as 89%.
Keywords :
gold; metallic thin films; micro-optics; micromachining; nickel; optical communication equipment; optical design techniques; optical fabrication; optical films; ray tracing; reflectivity; 89 percent; Au-Ni; compound parabolic concentrator; concentration efficiency; critical angle; glass hole; gold-nickel mirror plating method; high-efficiency concentrator; metal reflection layer; micromachining technique; nonimaging optics; optical design; optical fabrication; optical fiber communication; ray trace simulation; reflectance; reflective layer; Costs; Focusing; High speed optical techniques; Micromachining; Optical attenuators; Optical fiber communication; Optical fibers; Optical reflection; Optical refraction; Reflectivity;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2002.1012396
