title: Continuously tunable delay line based on SOI tapered Bragg gratings.
abstract: The realization of an integrated delay line using tapered Bragg gratings in a drop-filter configuration is presented. The device is fabricated on silicon-on-insulator (SOI) rib waveguides using a Deep-UV 248 nm lithography. The continuous delay tunability is achieved using the thermo-optical effect, showing experimentally that a tuning range of 450 ps can be obtained with a tuning coefficient of -51 ps/°C. Furthermore the system performance is considered, showing that an operation at a bit rate of 25 Gbit/s can be achieved, and could be extended to 80 Gbit/s with the addition of a proper dispersion compensation.
authors.affiliation: Technische Universität Berlin, Fachgebiet Hochfrequenztechnik, Berlin, Germany. ivano.giuntoni@tu-berlin.de
authors.forename: Ivano
authors.initials: I
authors.lastname: Giuntoni
authors.forename: David
authors.initials: D
authors.lastname: Stolarek
authors.forename: Dimitar I
authors.initials: DI
authors.lastname: Kroushkov
authors.forename: Jürgen
authors.initials: J
authors.lastname: Bruns
authors.forename: Lars
authors.initials: L
authors.lastname: Zimmermann
authors.forename: Bernd
authors.initials: B
authors.lastname: Tillack
authors.forename: Klaus
authors.initials: K
authors.lastname: Petermann
mesh_terms: D003460:Crystallization; D004867:Equipment Design; D005374:Filtration; D055095:Optics and Photonics; D017785:Photons; D012815:Signal Processing, Computer-Assisted; D012825:Silicon / Q000737:chemistry; D013696:Temperature; D041623:Tomography, Optical Coherence / Q000379:methods; D014466:Ultraviolet Rays
chemical_list: D012825:Silicon