Abstract
We report on an apodization scheme for terahertz fiber Bragg gratings. The grating consists of only 90 ablated notches on two opposite sides of a subwavelength polymer fiber. The grating strength can be effectively tuned by controlling the longitudinal shift between the two-sided notches, and apodization can be achieved by applying an envelope profile. Side lobe suppression of 14 dB was experimentally observed when compared with an unapodized grating.
© 2013 Optical Society of America
Full Article | PDF ArticleMore Like This
Ginu Rajan, Muhammad Yusof Mohd Noor, Nigel H. Lovell, Eliathamby Ambikaizrajah, Gerald Farrell, and Gang-Ding Peng
Opt. Lett. 38(17) 3359-3362 (2013)
Robert J. Williams, Christian Voigtländer, Graham D. Marshall, Andreas Tünnermann, Stefan Nolte, M. J. Steel, and Michael J. Withford
Opt. Lett. 36(15) 2988-2990 (2011)
Peter Zeil, Christian Voigtländer, Jens Thomas, Daniel Richter, and Stefan Nolte
Opt. Lett. 38(13) 2354-2356 (2013)