title: A high-resolution silicon-on-insulator arrayed waveguide grating microspectrometer with sub-micrometer aperture waveguides.
abstract: We demonstrate a 50-channel high-resolution arrayed waveguide grating microspectrometer with a 0.2 nm channel spacing on a silicon-on-insulator (SOI) platform. The chip size is 8 mm x 8 mm. High channel density and spectral resolution are achieved using high aspect ratio 0.6 mum x 1.5 mum waveguide apertures to inject the light into the input combiner and to intercept different spectral channels at the output combiner focal region. The measured crosstalk is <-10 dB, the 3 dB channel bandwidth is 0.15 nm, and the insertion loss is -17 dB near the central wavelength of lambda = 1.545 mum.
authors.forename: P
authors.initials: P
authors.lastname: Cheben
authors.forename: J H
authors.initials: JH
authors.lastname: Schmid
authors.forename: A
authors.initials: A
authors.lastname: Delâge
authors.forename: A
authors.initials: A
authors.lastname: Densmore
authors.forename: S
authors.initials: S
authors.lastname: Janz
authors.forename: B
authors.initials: B
authors.lastname: Lamontagne
authors.forename: J
authors.initials: J
authors.lastname: Lapointe
authors.forename: E
authors.initials: E
authors.lastname: Post
authors.forename: P
authors.initials: P
authors.lastname: Waldron
authors.forename: D-X
authors.initials: DX
authors.lastname: Xu