Abstract
We experimentally demonstrate a novel grating which only produces reflection with mode conversion in a two-mode waveguide. That characteristic can improve the performance of optical devices that currently use tilted Bragg gratings to provide the mode conversion. Tilted Bragg gratings produce also reflections without mode conversion which increases noise and crosstalk of the optical device.
Highlights
Several devices for wave division multiplexing (WDM) systems which utilize mode conversion in waveguides have been proposed and demonstrated [1,2,3,4]
We experimentally demonstrate a novel grating which only produces reflection with mode conversion in a two-mode waveguide
That characteristic can improve the performance of optical devices that currently use tilted Bragg gratings to provide the mode conversion
Summary
Several devices for wave division multiplexing (WDM) systems which utilize mode conversion in waveguides have been proposed and demonstrated [1,2,3,4]. Tilted Bragg gratings (TBGs) have been used to produce the mode conversion in these devices. TBGs produce multiple reflections, only one of which provides the desired mode conversion [5,6]. We present the operating principle and experimental demonstration results of the anti-symmetric waveguide Bragg grating previously proposed [8,9]. Modeling for this structure has shown only the desired, mode-converting reflection [8,9,10]. Our design can be utilized in communication and optical signal processing applications such as optical add-drop multiplexers (OADMs), optical header recognition chips, code division multiplexing access (CDMA) encoders and decoders and for optical encryption
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
