Title :
Increasing the Number of Inputs for Hadamard Transform Using Two-Dimensional Multimode Interference Couplers
Author :
Zhou, Junhe ; Gallion, Philippe
Author_Institution :
Dept. of Electron. Sci. & Eng., Tongji Univ., Shanghai, China
Abstract :
In this letter, a Hadamard transform based on two-dimensional multimode interference (2DMMI) couplers is proposed. Due to the nature of the Hadamard transform, the 2DMMI structure can increase the number of inputs from N to N2 in comparison to the one-dimensional (1-D) case. This method, which extends the 1-D structure to 2-D, can be used to optimize all kinds of optical Hadamard transformers.
Keywords :
Hadamard transforms; light interference; optical couplers; 2DMMI couplers; 2DMMI structure; optical Hadamard transform; two-dimensional multimode interference couplers; Couplers; Interference; Optical coupling; Optical device fabrication; Optical reflection; Optical waveguides; Transforms; Hadamard transform; two-dimensional multimode interference (2DMMI);
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2011.2159832
