title: High Q factor InP photonic crystal nanobeam cavities on silicon wire waveguides.
abstract: High-quality (Q) factor indium phosphide (InP)-based 1D photonic crystal nanobeam cavities are fabricated on silicon on insulator waveguides. Through the optimization of the fabrication process, the intrinsic Q factor of these fully encapsulated nanocavities is demonstrated to attain values higher than 100,000. Experimental and numerical investigations are carried out on the impact, on the Q factor, of the strength of the evanescent wave coupling between the cavity and the waveguide. We reveal that this coupling can result in a modification of the electromagnetic field distribution in the resonant mode, which gives rise up to a factor 4 reduction in the intrinsic Q factor for the structures under study.
authors.forename: Guillaume
authors.initials: G
authors.lastname: Crosnier
authors.forename: Dorian
authors.initials: D
authors.lastname: Sanchez
authors.forename: Alexandre
authors.initials: A
authors.lastname: Bazin
authors.forename: Paul
authors.initials: P
authors.lastname: Monnier
authors.forename: Sophie
authors.initials: S
authors.lastname: Bouchoule
authors.forename: Rémy
authors.initials: R
authors.lastname: Braive
authors.forename: Grégoire
authors.initials: G
authors.lastname: Beaudoin
authors.forename: Isabelle
authors.initials: I
authors.lastname: Sagnes
authors.forename: Rama
authors.initials: R
authors.lastname: Raj
authors.forename: Fabrice
authors.initials: F
authors.lastname: Raineri