Open AccessScalable selective high order mode pass filter architecture with asymmetric directional couplers
Author(s) -
Kazi Tanvir Ahmmed,
Hau Ping Chan,
Binghui Li
Publication year - 2020
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.402751
Subject(s) - scalability , computer science , filter (signal processing) , power dividers and directional couplers , multiplexing , optics , mode (computer interface) , architecture , optical filter , wavelength division multiplexing , flexibility (engineering) , electronic engineering , topology (electrical circuits) , physics , telecommunications , engineering , wavelength , electrical engineering , art , statistics , mathematics , database , visual arts , computer vision , operating system
We propose a novel design architecture to realize scalable selective mode filter based on the asymmetric directional coupler structure. In this structure, any arbitrary high-order mode can pass, whereas other unwanted modes are blocked. Furthermore, multiple optical modes can be blocked by only adjusting the structural parameters. As a proof of concept, we experimentally demonstrated a three-mode device and the scalability of the proposed structure is demonstrated by another design of four-mode filter. The proposed architecture offers scalability and high-design flexibility, and it has excellent potential to be used in advanced mode division multiplexing optical networks.