Skip navigation
Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/14052
Title: Long-period-grating in a trench assisted planar optical waveguide
Authors: Ashok N.
Rastogi, Vipul K.
Kumar A.
Published in: Applied Optics
Abstract: We present long-period-grating in a planar optical waveguide that contains a low-index trench in the cladding region. The effect of the trench on transmission spectrum of the grating has been studied. The waveguide structure has been analyzed by the transfer matrix method and the output spectrum of the grating has been calculated by the coupled mode theory. Our numerical results show that position, strength, and width of the trench significantly affect the transmission spectrum of the grating. In particular, we show the appearance of triple resonance between a set of coupled modes and obtain an ultrawide band rejection in the output spectrum. We numerically demonstrate applications of the proposed structure in wideband rejection filters, refractive index sensors, and gain equalization of erbium-doped waveguide amplifiers. © 2013 Optical Society of America.
Citation: Applied Optics (2013), 52(9): 1954-1962
URI: https://doi.org/10.1364/AO.52.001954
http://repository.iitr.ac.in/handle/123456789/14052
Issue Date: 2013
Publisher: OSA - The Optical Society
ISSN: 1559128X
Author Scopus IDs: 57193324896
7006364661
57203774925
Author Affiliations: Ashok, N., Department of Physics, Indian Institute of Technology Roorkee, Roorkee 247 667, India
Rastogi, V., Department of Physics, Indian Institute of Technology Roorkee, Roorkee 247 667, India
Kumar, A., Department of Applied Physics, Delhi Technological University, Delhi 110042, India
Corresponding Author: Ashok, N.; Department of Physics, Indian Institute of Technology Roorkee, Roorkee 247 667, India; email: nandam.ashok@gmail.com
Appears in Collections:Journal Publications [PH]

Files in This Item:
There are no files associated with this item.
Show full item record


Items in Repository are protected by copyright, with all rights reserved, unless otherwise indicated.