Integrating cavity device for measuring the optical backscattering coefficient in a fluid. Academic Article uri icon


  • We present the mathematical description, design, and development of an instrument that precisely determines the backscattering coefficient (bb) in water using a custom integrating cavity to collect light scattered in the backward hemisphere-a true bb meter. The design allows us to directly measure bb in a medium while not making any assumptions about the shape of β(θ) and/or of its scattering particulates. The concave surface of the quartz aperture to the integrating cavity minimizes reflection losses. The output signal is a direct linear function of bb. This bb meter is the first instrument to make a direct measurement of bb with <1% accuracy and it is compatible with several modes of routine oceanic deployment.

author list (cited authors)

  • Broiles, E. F., Cone, M., Orrico, C., Dewey, M., Derr, A., Twardowski, M., & Fry, E. S.

citation count

  • 0

complete list of authors

  • Broiles, Eleonora Figueroa||Cone, Michael||Orrico, Cristina||Dewey, Michel||Derr, Alex||Twardowski, Michel||Fry, Edward S

publication date

  • August 2018