In-line optical modulators with low insertion losses and high maximum optical powers are required for <i>Q</i> switching and cavity dumping of fiber lasers as well as for nonlinear optical-fiber experiments. We report the design of polarimetric all-fiber modulators based on optical-fiber birefringence modulation combined with an all-fiber polarizer. Birefringence modulation involves a piezoelectric ceramic tube. This simple technique permits efficient low-frequency and high-frequency harmonic modulation, up to the megahertz range, as well as modulation of pulses shorter than 1 μs.
© 1999 Optical Society of America
(060.2310) Fiber optics and optical communications : Fiber optics
(060.2400) Fiber optics and optical communications : Fiber properties
(060.4080) Fiber optics and optical communications : Modulation
(230.4110) Optical devices : Modulators
Ana Rosa Boyain, Lluis Martínez-León, José Luis Cruz, Antonio Diez, and Miguel Vicente Andrés, "Low-frequency and High-frequency All-fiber Modulators Based on Birefringence Modulation," Appl. Opt. 38, 6278-6283 (1999)