Reconfigurable add-drop multiplexer for spatial modes
Open Access
- 21 August 2013
- journal article
- Published by Optica Publishing Group in Optics Express
- Vol. 21 (17) , 20220-20229
Abstract
We show how a spatial mode can be extracted from a light beam, leaving the other orthogonal modes undisturbed, and allowing a new signal to be retransmitted on that mode. The method is self-aligning, avoids fundamental splitting losses, and uses only local feedback loops on controllable beam splitters and phase shifters. It could be implemented with Mach-Zehnder interferometers in planar optics. The method can be extended to multiple simultaneous mode extractions. As a spatial reconfigurable optical add-drop multiplexer, it is hitless, allowing reconfiguration without interrupting the transmission of any channel.Keywords
Funding Information
- Air Force Office of Scientific Research (AFOSR) (FA9550-09-0704, FA9550-10-1-0264)
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