title: Multi-mode to single-mode conversion in a 61 port Photonic Lantern.
abstract: Efficient multi-mode (MM) to single-mode (SM) conversion in a 61 port splitter or "Photonic Lantern" is demonstrated. The coupling loss from a 100 microm core diameter MM section to an ensemble of 61 SM fibers and back to another 100 microm core MM section is measured to be as low as 0.76 dB. This demonstration shows the feasibility of using the Photonic Lanterns within the field of astrophotonics for coupling MM star-light to an ensemble of SM fibers in order to perform fiber Bragg grating based spectral filtering.
authors.affiliation: NKT Photonics A/S, Blokken 84, DK-3460 Birkerød, Denmark. dno@nktphotonics.com
authors.forename: D
authors.initials: D
authors.lastname: Noordegraaf
authors.forename: P M W
authors.initials: PM
authors.lastname: Skovgaard
authors.forename: M D
authors.initials: MD
authors.lastname: Maack
authors.forename: J
authors.initials: J
authors.lastname: Bland-Hawthorn
authors.forename: R
authors.initials: R
authors.lastname: Haynes
authors.forename: J
authors.initials: J
authors.lastname: Laegsgaard