Temperature-compensating device with central-wavelength tuning for optical fiber gratings

The demand for fiber Bragg gratings (FBG) for use in optical transmission devices has grown exponentially in the telecommunication industry. A stable temperature compensation mechanism is essential to the successful use of FBG-based devices. In this paper, a tubular temperature-compensating package with a tunable component is de- scribed. Such a mechanism serves for posttuning the fixture in order to obtain a designed central wavelength. With the aid of the developed experimental procedure, this compact and easily manufactured package can achieve a temperature coefficient of 8.3 310 24 nm/°C in the tem- perature range from 240 to 80°C. The same package can also be used for multi-FBG applications. © 2001 Society of Photo-Optical Instrumentation Engi- neers. (DOI: 10.1117/1.1360242)