Title :
Design and analysis of low loss MMI based 4Ã\x974 optical switch using Benes architecture with SOAs
Author :
Singh, Ghanshyam ; Singh, Anoop ; Yadav, R.P. ; Janyani, Vijay
Author_Institution :
Dept. of Electron. & Commun. Eng., Malaviya Nat. Inst. of Technol., Jaipur
Abstract :
This paper presents an overview of self-imaging principle used in MMI couplers and also explains the application of multimode waveguide as an optical switch. The application of MMI coupler to realize a 2times2 optical switch has been explained by varying the refractive indices of various regions of MMI section by only 1-2% and the switch is found to exhibit 2-10% loss for various coupling states at different power inputs. Then the basic 2times2 switch is exploited in design of 4times4 Benes switch. Benes switch is used as it is suitable for large switches requiring fewer SOAs which make it a good candidate for further use in higher order switches. Simulation results are shown. Power coupling losses occurring in 4times4 switch are compensated using minimum number of SOAs with low input injection current of the order of 10-20 mA.
Keywords :
Talbot effect; optical couplers; optical losses; optical switches; refractive index; semiconductor optical amplifiers; Benes architecture; SOA; current 10 mA to 20 mA; input injection current; multimode interference couplers; multimode waveguide; optical switch; power coupling losses; refractive indices; self-imaging principle; Interference; Optical coupling; Optical design; Optical fiber couplers; Optical fiber polarization; Optical imaging; Optical losses; Optical refraction; Optical switches; Optical waveguides; Benes architecture; Integrated optics; Multimode interference (MMI); Optical switch; SOAs;
Conference_Titel :
PhotonicsGlobal@Singapore, 2008. IPGC 2008. IEEE
Conference_Location :
Singapore
Print_ISBN :
978-1-4244-3901-0
Electronic_ISBN :
978-1-4244-2906-6
DOI :
10.1109/IPGC.2008.4781478
