Abstract
In this letter, we report on the inscription of a fourth-order fiber Bragg grating made line-by-line in the optical fiber using a femtosecond laser. Strong Bragg resonance (~17 dB) and low insertion loss (~0.5 dB) were obtained with only 2000 periods. Measured refractive index change of these inscribed lines reaches up to 7 × 10-3. The grating was fully characterized and the low insertion loss together with low polarization-dependent loss were realized compared to gratings made by the point-by-point method. The high temperature annealing experiment shows the grating can survive up to at least 800°C.
| Original language | English |
|---|---|
| Article number | 5471129 |
| Pages (from-to) | 1190-1192 |
| Number of pages | 3 |
| Journal | IEEE Photonics Technology Letters |
| Volume | 22 |
| Issue number | 16 |
| DOIs | |
| Publication status | Published - 15 Aug 2010 |
Bibliographical note
© 2010 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.Keywords
- Bragg resonance
- femtosecond laser
- high temperature annealing
- line-by-line fiber Bragg grating
- low insertion loss