title: Fiber-optic coupling based on nonimaging expanded-beam optics.
abstract: We have fabricated and experimentally tested low-cost and mass-producible multimode fiber-optic couplers and connectors based on nonimaging beam-expanding optics and Liouville's theorem. Analysis indicates that a pair coupling loss of -0.25 dB can be achieved. Experimentally, we measured insertion losses as low as -0.38 dB. The beam expanders can be mass produced owing to the use of plastic injection-molding fabrication techniques and packaged in standard connector housings. This design is compatible with the fiber geometry and can yield highly stable coupling owing to its high tolerance for misalignments.
authors.forename: B
authors.initials: B
authors.lastname: Moslehi
authors.forename: J
authors.initials: J
authors.lastname: Ng
authors.forename: I
authors.initials: I
authors.lastname: Kasimoff
authors.forename: T
authors.initials: T
authors.lastname: Jannson