Title :
Finite Impulse Response Filter Using 4-Port MMI Couplers for Residual Dispersion Compensation
Author :
Rahim, Abdul ; Schwarz, Stefan ; Bruns, Juergen ; Voigt, Karsten ; Kroushkov, Dimitar Ivanov ; Arnous, Mohammed Tareq ; Schäffer, Christian G. ; Petermann, Klaus
Author_Institution :
Dept. of High Freq. Technol.-Photonics, Tech. Univ. Berlin, Berlin, Germany
fDate :
4/1/2012 12:00:00 AM
Abstract :
Many implementations of optical finite impulse response filter for signal processing applications have been realized in integrated photonics using 2×2 couplers. We have implemented a filter using 4× 4 couplers. Such a filter is useful for the compensation of residual dispersion in a fiber optic transmission system. Silicon photonics realization using 4-port multimode interference couplers in 4 μm silicon-on-insulator technology has been carried out for a free spectral range of 100 GHz. The transmission and group delay for the fabricated device have been measured and a good agreement between the simulation and experimental results has been achieved. The proposed filter can compensate up to ±176 ps/nm of fiber chromatic dispersion.
Keywords :
FIR filters; integrated optics; optical communication equipment; optical couplers; optical fibre communication; optical fibre dispersion; optical filters; silicon-on-insulator; fiber chromatic dispersion; fiber optic transmission system dispersion; four port MMI coupler; integrated photonics; multimode interference coupler; optical finite impulse response filter; residual dispersion compensation; silicon-on-insulator; size 4 mum; Computer architecture; Couplers; Delay; Delay lines; Dispersion; Optical device fabrication; Optical waveguides; Dispersion compensation; Integrated photonics; finite impulse response (FIR) filter; multimode interference (MMI) coupler;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2012.2185038
