Abstract
Straight and S-bend rib waveguide structures with a novel design have been fabricated and characterized on a silicon-on-insulator (SOI) platform. For a typical straight rib waveguide, the single-mode waveguide at has been verified by measuring the near-field output with an IR camera, and a nearly polarization-independent mode size is found to be . The waveguide loss has been estimated from low-finesse Fabry–Perot transmission characteristics, and a typical value of is obtained. It is also shown experimentally that the bending radius of an asymmetrically etched S-bend waveguide can be ten times smaller than that of conventional symmetrically etched S-bend waveguides for similar optical losses. These bend waveguides (bending radii of ) are found to be low loss () and nearly polarization independent.
© 2009 Optical Society of America
Full Article | PDF ArticleMore Like This
Yusheng Qian, Seunghyun Kim, Jiguo Song, Gregory P. Nordin, and Jianhua Jiang
Opt. Express 14(13) 6020-6028 (2006)
Thomas Yong Long Ang, Soon Thor Lim, Shuh Ying Lee, Ching Eng Png, and Mee Koy Chin
Appl. Opt. 48(15) 2821-2835 (2009)
Matteo Cherchi, Sami Ylinen, Mikko Harjanne, Markku Kapulainen, and Timo Aalto
Opt. Express 21(15) 17814-17823 (2013)