Abstract
Long period gratings (LPGs) are fabricated by use of focused high frequency CO2 laser pulses to periodically modify the transverse dimension of silica microfibers. A 20-period LPG with a 27dB attenuation dip is realized in a microfiber with a diameter of ̃6.3μm. The resonant wavelength has a negative temperature coefficient and a high sensitivity to external refractive index. The microfiber LPGs may be useful in micron scale in-fiber devices and sensors.
| Original language | English |
|---|---|
| Pages (from-to) | 21882-21890 |
| Number of pages | 9 |
| Journal | Optics Express |
| Volume | 17 |
| Issue number | 24 |
| DOIs | |
| Publication status | Published - 23 Nov 2009 |
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics