title: Biconical-taper single-mode fiber coupler.
abstract: Single-mode fiber couplers produced as fused biconical-taper structures are reported on. The devices exhibit low loss (0.5 dB), arbitrary branching ratio, polarization independence, and broadband operation in wavelength.
authors.affiliation: Communications Research Centre, Department of Communications, Ottawa, Ontario K2H 8S2, Canada.
authors.forename: B S
authors.initials: BS
authors.lastname: Kawasaki
authors.forename: K O
authors.initials: KO
authors.lastname: Hill
authors.forename: R G
authors.initials: RG
authors.lastname: Lamont