title: Concave grating and convex mirror double dispersion spectrograph for optical network applications.
abstract: The concave grating stationary anastigmatic spectrograph has been modified into a novel retroreflective scheme by introducing a convex mirror concentric to the intermediate image. This provides double dispersion, diffraction-limited imaging of a long entrance slit, and substantial compensation of the stationary chromatic astigmatism. One can realize 140 independent multi/demultiplexers with 160 channels each simultaneously in the described device for optical network applications. Ray-tracing spot diagrams are presented.
authors.forename: E G
authors.initials: EG
authors.lastname: Churin
authors.forename: P
authors.initials: P
authors.lastname: Bayvel
authors.forename: V B
authors.initials: VB
authors.lastname: Smirnitskii
authors.forename: F N
authors.initials: FN
authors.lastname: Timofeev
authors.forename: J E
authors.initials: JE
authors.lastname: Midwinter