×

Sensing device having a large diameter D-shaped optical waveguide

  • US 8,073,293 B2
  • Filed: 01/13/2004
  • Issued: 12/06/2011
  • Est. Priority Date: 03/18/2002
  • Status: Expired due to Fees
First Claim
Patent Images

1. An optical sensor for sensing a measurand, comprising:

  • an optical waveguide having an outer cladding and at least one inner core disposed therein which propagates light;

    a D-shaped portion of the optical waveguide having a generally D-shaped cross-section, wherein a property of the D-shaped portion changes in response to the measurand, the property being polarization or birefringence; and

    a layer disposed on a flat surface of the D-shaped portion, wherein a refractive index of the layer changes in response to a change in the measurand.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×