Title :
A novel design proposal to minimize reflections in deep-ridge multimode interference couplers
Author :
Gottesman, Y. ; Rao, E.V.K. ; Dagens, B.
Author_Institution :
France Telecom, CNET, Bagneux, France
Abstract :
We propose and demonstrate here the high efficiency of a novel design for deep-ridge multimode interference (MMI) couplers rendering them to behave like good transmitters with minimized reflections when integrated with emission devices. Using optical low-coherence reflectometry measurements, this novel design is shown to suppress to a great extent the highly detrimental internal resonance and often important backreflections inherent to even fully optimized deep-ridge MMIs.
Keywords :
integrated optics; light interference; light reflection; optical couplers; optical design techniques; optical fabrication; reflectometry; ridge waveguides; backreflections; deep-ridge multimode interference couplers; design proposal; efficiency; emission devices; fully optimized deep-ridge multimode interference coupler; highly detrimental internal resonance; minimized reflections; novel design; optical low-coherence reflectometry measurements; reflections minimisation; transmitters; Couplers; Interference; Optical design; Optical devices; Optical reflection; Optical transmitters; Proposals; Reflectometry; Resonance; Stimulated emission;
Journal_Title :
Photonics Technology Letters, IEEE
