Abstract
The necessity of packaging and the basic principle of temperature compensation package for fiber gratings are expatiated. A method of packaging fiber gratings with the negative temperature coefficient material is introduced, and the temperature characteristic and long-term stability of packaged fiber gratings are measured. This packaging keeps the compact structure and doesn't influence the intrinsic characteristic of fiber gratings. In addition, its temperature coefficient is reduced to 0.0005nm/°C, and this result reaches applicable request. The more important is this packaging can keep good long-term stability. After half a year, the characteristic, reflecting wavelength and temperature coefficient of the packaged fiber gratings have little changed, and this result realizes the high stability packaging for fiber gratings.
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