论文信息 - Line-by-Line Fiber Bragg Grating Made by Femtosecond Laser

Line-by-Line Fiber Bragg Grating Made by Femtosecond Laser

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.

[1] I Bennion,et al. Point-by-point inscription of first-order fiber Bragg grating for C-band applications. , 2007, Optics express.

[2] D. Grobnic,et al. Bragg gratings written in all-SiO/sub 2/ and Ge-doped core fibers with 800-nm femtosecond radiation and a phase mask , 2004, Journal of Lightwave Technology.

[3] K. Miura,et al. Writing waveguides in glass with a femtosecond laser. , 1996, Optics letters.

[4] Ian Bennion,et al. Direct inscription of Bragg gratings in coated fibers by an infrared femtosecond laser. , 2006, Optics letters.

[5] Ian Bennion,et al. A refractometer based on a micro-slot in a fiber Bragg grating formed by chemically assisted femtosecond laser processing. , 2007, Optics express.

[6] P. Corkum,et al. Polarization-selective etching in femtosecond laser-assisted microfluidic channel fabrication in fused silica. , 2005, Optics letters.

[7] Koji Sugioka,et al. Control of the cross-sectional shape of a hollow microchannel embedded in photostructurable glass by use of a femtosecond laser. , 2003, Optics letters.

[8] K. Nugent,et al. Refractive-index profiling of optical fibers with axial symmetry by use of quantitative phase microscopy. , 2002, Optics letters.