title: Measurement of small birefringence and loss in a nonlinear single-mode waveguide.
abstract: We design and fabricate a birefringent semiconductor waveguide for application to nonlinear photonics, demonstrating that it is possible to engineer a small birefringence into such a device using multiple core layers. We also demonstrate a simple technique to accurately determine small waveguide birefringence using a differential measurement, present useful methods for coupling light into and out of the device, and make estimates of coupling and linear device losses.
authors.affiliation: Joint Quantum Institute, National Institute of Standards and Technology, 100 Bureau Drive, Gaithersburg, Maryland 20899, USA. daniel.rogers@nist.gov
authors.forename: Daniel J
authors.initials: DJ
authors.lastname: Rogers
authors.forename: Christopher J K
authors.initials: CJ
authors.lastname: Richardson
authors.forename: Julius
authors.initials: J
authors.lastname: Goldhar
authors.forename: Charles W
authors.initials: CW
authors.lastname: Clark