title: Design of Fabry-Perot filters in planar waveguides with deep-etched features for spatial switching.
abstract: Scalable optical space switches compatible with high bit rates which can be reconfigured on-the-fly are needed to increase the flexibility of optical networks. We present the design of integrated Fabry-Perot filters working at oblique incidence, which can be used to build optical space switches. A comprehensive planar waveguide optimization was conducted to minimize radiation losses in the deep-etch features forming the filter mirrors. Four high order cavities were coupled to create a 200 GHz comb wavelength response with passbands larger than 50 GHz and extinction ratio greater than 20 dB over the entire C-band. Gaussian beam propagation analysis showed that the minimum beam waist required to avoid distortion increases rapidly with incident angle.
authors.affiliation: Photonic Systems Group, Department of Electrical and Computer Engineering, McGill University, 3480 University Street, Montréal, Québec, Canada, H3A 2A7. michael.menard@mail.mcgill.ca
authors.forename: Michaël
authors.initials: M
authors.lastname: Ménard
authors.forename: Andrew G
authors.initials: AG
authors.lastname: Kirk
mesh_terms: D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005374:Filtration / Q000295:instrumentation*; D007368:Interferometry / Q000295:instrumentation*; D055096:Optical Devices; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*; D014159:Transducers