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Dual-Wavelength Ring Laser Is Step-Tunable Across 20 nm

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Feat requires careful balancing of homogeneous and inhomogeneous gain.

Breck Hitz

Stable, single-mode, dual-wavelength lasers have important applications in fiber sensors, in optical instrumentation and in communications based on wavelength division multiplexing. Recently, Shilong Pan and his colleagues at Tsinghua University in Beijing demonstrated a dual-wavelength laser in which each wavelength oscillates in only a single longitudinal mode. Moreover, the pair of wavelengths can be step-tuned between 1533 and 1565 nm. The laser was configured as a fiber optic ring, with the gain provided by both an erbium-doped fiber amplifier and a semiconductor optical amplifier...Read full article

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    Published: June 2008
    Communicationsdual-wavelength laserFiber sensorsResearch & TechnologySensors & Detectorswavelength oscillates

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