Title :
All-Optical Discrete Fourier Transform Based On Multimode Interference Couplers
Author_Institution :
Dept. of Electron. Sci. & Eng., Tongji Univ., Shanghai, China
Abstract :
In this letter, an all-optical discrete Fourier transform (DFT) device based on multimode interference (MMI) couplers is proposed. The DFT device is composed of a discrete sine transform device and a discrete cosine transform device, both of which are based on MMI couplers. The main advantage of this DFT device is that it is composed of two compact MMI couplers, which greatly reduces the fabrication effort on planar lightwave circuits.
Keywords :
discrete Fourier transforms; discrete cosine transforms; optical couplers; optical planar waveguides; all-optical discrete Fourier transform; discrete cosine transform device; discrete sine transform device; multimode interference couplers; planar lightwave circuit; Discrete Fourier transform (DFT); multimode interference (MMI);
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2010.2050307
