A new method for sampled fiber Bragg grating fabrication by use of both femtosecond laser and CO₂ laser

Abstract

A new method for sample fiber Bragg grating fabrication by use of both femtosecond laser and CO₂ laser has been proposed and demonstrated. Such a method exhibits the advantages of high fabrication flexibility, and good thermal stability. The sampling period and duty cycle can be easily varied by changing the CO₂ laser beam scanning pattern during operation. The gratings produced have potential applications in optical communications, fiber lasers, and optical fiber sensors.