This application claims the benefit of the following three U.S. Provisional Patent Applications: Serial No. 60/514,768 entitled "Coherence-Gated Optical Glucose Monitor" and filed on Oct. 27, 2003; 60/526,935 entitled "Method and Apparatus for Acquiring Images of Optical Inhomogeneity in Substances" and filed on Dec. 4, 2003; and 60/561,588 entitled "Acquiring Information of Optical Inhomogeneity and Other Properties in Substances" and filed on Apr. 12, 2004.
In addition, this application is a continuation-in-part application of and claims the benefits of pending U.S. application Ser. No. 10/860,094 entitled "MEASUREMENTS OF OPTICAL INHOMOGENEITY AND OTHER PROPERTIES IN SUBSTANCES USING PROPAGATION MODES OF LIGHT" and filed on Jun. 3, 2004 now U.S. Pat. No. 6,943,881; and Ser. No. 10/861,697 entitled "MEASUREMENTS OF SUBSTANCES USING TWO DIFFERENT PROPAGATION MODES OF LIGHT THROUGH A COMMON OPTICAL PATH" and filed on Jun. 4, 2004 now U.S. Pat. No. 6,903,820, both of which claim the benefit of U.S. Provisional Patent Application No. 60/475,673 entitled "Method and Apparatus for Acquiring Images of Optical Inhomogeneity in Substances" and filed on Jun. 4, 2003.
Furthermore, this application is a continuation-in-part application of and claims the benefit of a pending PCT application No. US2004/017649 entitled "Measurements of Optical Inhomogeneity and Other Properties in Substances using Propagation Modes of Light" and filed on Jun. 4, 2004.
This application describes designs, implementations, and techniques for controlling propagation mode or modes of light in a common optical path, which may include one or more waveguides, to sense a sample.