Two-dimensional optical power distribution of side-out-coupled radiation from tilted FBGs in multimode fibre
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Two-dimensional optical power distribution of the out-coupled radiation from UV‐inscribed tilted fibre Bragg gratings (TFBGs) in multimode fibre (MMF) has been side-detected with high spatial/spectral resolution, showing a near-identical radiation mode profile to that measured from the fibre-end detection method. A comparative investigation of the radiation characteristics of TFBGs fabricated in singlemode fibre (SMF) and MMF clearly indicates that the radiation out-coupling is stronger and spatially more confined in MMF. The unique spatial-to-spectral encoding property of the coupling mechanism offers potential application in low-cost WDM devices.
| Original language | English |
|---|---|
| Pages (from-to) | 651-653 |
| Journal | Electronics Letters |
| Volume | 39 |
| Issue number | 8 |
| DOIs | |
| Publication status | Published - 17 Apr 2003 |