high resolution long-period grating temperature sensor
A simple etched and packaged LPG temperature sensor for biomedical application has been developed and resolution of about 0.005C is achieved, in comparison with conventional thermometer, which only exhibits 0.01C. The temperature coefficient of the specially packaged LPG sensor is measured to be 3.776nm/C, which is 15 times higher than that of the bare LPG fiber inscribed in the same PS1250/1500 photosensitive optical fiber.
temperature sensor thermometer long period gratings