Realization of visible light integrated circuits for all-optical haar transform

Abstract

Photonic integrated circuits have been designed, simulated and tested on TriPleX TM platform technology for implementing optical Haar Transform (HT) in the visible spectrum. Optical circuits contain the new building block (BB) designed using the multimode interference (MMI) structure performing optical HT on a pair of the optical signals. The Outputs of the BB demonstrates the sum and subtraction of the input signals according to the HT operation. 1st-order and 2nd-order optical HT achieved for the green light input signals. Simulation and experimental results have successfully validated designed photonic circuits capability in implementing optical HT.

Image compression in all-optical domain using one 6×6 multimode interference coupler

“…The Haar wavelet transform decomposes a discrete signal into two sub-signals [12]. For a continuous signal, the wavelet transform of signal f(t) is expressed by [13]:…”