Improved thermal and strain performance of annealed polymer optical fiber Bragg gratings

We report on a detailed study of the inscription and characterization of fiber Bragg gratings (FBGs) in commercial step index polymer optical fibers (POFs). Through the growth dynamics of the gratings, we identify the effect of UV-induced heating during the grating inscription. We found that FBGs in annealed commercial POFs can offer more stable short-term performance at both higher temperature and larger strain. Furthermore, the FBGs' operational temperature and strain range without hysteresis was extended by the annealing process. We identified long-term stability problem of even the annealed POF FBGs.

...During the initialrapid growth a standard blue shift of the peak is observed due to laser induced heating, which will disappear after the laser is turned off [6]...
...Both 850 nm mPOF and POF FBGs respond linearly to the applied strain with an identical sensitivity of 0.71 pm/ .A t 1550 nm both FBGs display a linear response with an identical sensitivity of 1.3 pm/ , which corresponds to an earlier measurement on this particular 1550 nm POF FBG [6]...
...We note that the sensitivity can be different fromfiber to fiber depending on the material and on the thermal history of thefiber [6] e.g., 1.46 pm/ was reported in [18] and 1.13 pm/ was reported in [17] around 1550 nm, compared to the 1.3 pm/ measured here and in [6]...
...We note that the sensitivity can be different fromfiber to fiber depending on the material and on the thermal history of thefiber [6] e.g., 1.46 pm/ was reported in [18] and 1.13 pm/ was reported in [17] around 1550 nm, compared to the 1.3 pm/ measured here and in [6]...

Keywords (4)

Improved thermal and strain performance of annealed polymer optical fiber Bragg gratings,10.1016/j.optcom.2010.08.069,Optics Communications,Wu Yuan,Al

Citation Context (2)

Alessio Stefani, et al. Narrow Bandwidth 850-nm Fiber Bragg Gratings in Few-Mode Polymer Optic...

Alessio Stefani, et al. Polymer optical fiber Bragg grating sensors: Measuring acceleration

Citations (2)

Narrow Bandwidth 850-nm Fiber Bragg Gratings in Few-Mode Polymer Optical Fibers

Polymer optical fiber Bragg grating sensors: Measuring acceleration


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