title: Ultralong continuously tunable parametric delays via a cascading discrete stage.
abstract: We report experimental demonstration of an all-optical continuously tunable delay line based on parametric mixing with a total delay range of 7.34 mus. The bit-error rate performance of the delay line was characterized for a 10-Gb/s NRZ data channel. This result is enabled by cascading a discrete delay line that consists of 16 wavelength-dependent delays and a continuously tunable delay stage. Four wavelength conversion stages based on four-wave mixing in silicon waveguides were performed in order to achieve wavelength-preserving operation. The wavelength-optimized optical phase conjugation scheme employed in the delay line is capable of minimizing the residual dispersion for the entire tuning range.
authors.affiliation: School of Applied and Engineering Physics, Cornell University, Ithaca, NY 14853, USA. yd82@cornell.edu
authors.forename: Yitang
authors.initials: Y
authors.lastname: Dai
authors.forename: Yoshitomo
authors.initials: Y
authors.lastname: Okawachi
authors.forename: Amy C
authors.initials: AC
authors.lastname: Turner-Foster
authors.forename: Michal
authors.initials: M
authors.lastname: Lipson
authors.forename: Alexander L
authors.initials: AL
authors.lastname: Gaeta
authors.forename: Chris
authors.initials: C
authors.lastname: Xu
mesh_terms: D004867:Equipment Design; D019544:Equipment Failure Analysis; D055096:Optical Devices; D012031:Refractometry / Q000295:instrumentation*; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*; D014159:Transducers