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Monolithic Saturable Absorber Modulates Optical Signal

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Anne Fischer Lent

Computers, cell phones and XBoxes are powered by the ability of electrons to control electrons. In the world of photonics, the challenge is to develop the ability of photons to control photons. Researchers at Tampere University of Technology in Finland have demonstrated the efficient modulation of a signal beam with a saturable absorber in a monolithic semiconductor structure. Their goal was to develop a novel intensity modulator that exploits saturable absorption -- which can be actively controlled -- in multiple quantum wells. When used with a mode-locked fiber laser, such a device would...Read full article

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    Published: March 2003
    multiple quantum wellsResearch & Technologysaturable absorber in a monolithic semiconductor structure

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