We show that input and output coupling have an extremely strong effect on the performance of a metal-clad polarizer integrated in an optical circuit, with the extinction ratios showing large oscillations for small changes in device length for conventional low-index buffers. We further show that if high-index buffers are used, very high extinction ratios for very short devices can be achieved; moreover, such devices are insensitive to small changes in device lengths.
© 1995 Optical Society of America
Original Manuscript: September 6, 1994
Published: February 15, 1995
Mamta Saini, Mukesh P. Singh, and Enakshi K. Sharma, "Strong effect of output coupling on the performance of metal-clad waveguide polarizers," Opt. Lett. 20, 365-367 (1995)