Abstract
We describe a reflective beam splitter based on the binary grating with a metal layer, which consists of the phase grating
etched in fused silica, the Ag layer evaporated on the substrate. With the optimized grating parameters, especially for the
grating duty cycle, the high efficiency and the 50/50 output can be obtained for TE and TM polarizations. Moreover, good
performance can be remained within the given range near the central wavelength and Bragg angle. Such a reflective beam
splitter based on the binary grating with a metal layer can have advantages of high efficiency, good uniformity, and
polarization-independent property..
Keywords
Binary grating, Metal layer, Beam splitter.
Citation
BO WANG, LI CHEN, LIANG LEI, JINYUN ZHOU, Reflective binary grating with a metal layer for polarization-independent beam splitter, Optoelectronics and Advanced Materials - Rapid Communications, 7, 11-12, November-December 2013, pp.813-816 (2013).
Submitted at: Dec. 21, 2012
Accepted at: Nov. 7, 2013