Abstract
We propose an inverse Wentzel-Kramer-Brillouin (WKB) method for the construction of the refractive-index profiles of buried graded-index planar waveguides from the measured effective indexes of the guided modes. Our method involves experimental determination of the location of the peak index in the buried profile, measurement of the effective indexes in air, and an index-matching liquid, and application of a searching algorithm to find the best-fit profile through inverting the WKB equations. We present numerical examples and experimental results to demonstrate the performance of the method. © 2008 IEEE.
| Original language | English |
|---|---|
| Pages (from-to) | 1367-1373 |
| Journal | Journal of Lightwave Technology |
| Volume | 26 |
| Issue number | 11 |
| DOIs | |
| Publication status | Published - 1 Jun 2008 |
Research Keywords
- Buried waveguide
- Graded-index waveguide
- Optical planar waveguide
- Optical waveguide
- Refractive-index measurement
- Wentzel-Krame Brillouin (WKB) method
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