Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10429948 | Biosensors and Bioelectronics | 2005 | 8 Pages |
Abstract
A large penetration depth of an evanescent wave is the key to success for developing an ultra high-resolution fiber-based evanescent wave biosensor. Tapering the fiber and launching light at an angle has the potential of increasing the penetration depth of evanescent wave manifolds. The effects of tapering, launch angle and taper length of the fiber have been explored in detail using a ray-tracing model to calculate the highest possible penetration depth of the evanescent field. Evanescent wave penetration depths of the order of the size of living cells have been achieved by optimizing the parameters relating geometry of tapered fibers.
Related Topics
Physical Sciences and Engineering
Chemistry
Analytical Chemistry
Authors
Mohammad Ahmad, Larry L. Hench,