FIBER OPTIC MODULATORS
Fiber-coupled acousto-optic modulators (FCAOM) offer a compact and robust solution for fiber laser modulation and frequency shifting, allowing direct control of the timing, intensity, and temporal shape of the laser output. Our Fiber-Q™ modulators offer high extinction ratio, low insertion loss, and excellent stability in both single-mode and polarization maintaining formats at modulation frequencies up to 30 MHz for visible and infrared wavelengths. Built for reliability, the Fiber-Q™ series of products features a rugged hermetic design in a compact, low-profile package, ideal for ease of integration into all-fiber and OEM systems.
Fiber-coupled acousto-optic modulators (FCAOM) were initially developed by G&H to modulate the intensity of light contained in fibers without having to break the fiber to install a free-space acousto-optic modulator (AOM). Traditionally, modulation in fiber lasers was achieved using a master oscillator power amplifier (MOPA). The MOPA limited the pulse shapes that could be created, and required a separate semiconductor seed laser system. Direct integration of a fiber optic acousto-optic modulator is a far simpler approach, and allows the optical path to remain closed for better power handling and reliability, in addition to lower loss.
