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Optica Publishing Group
  • 2017 Conference on Lasers and Electro-Optics Pacific Rim
  • (Optica Publishing Group, 2017),
  • paper s1298

Integrated Fiber-Optic Detector Based on Dip-Coated Colloidal Quantum Dots

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Abstract

In long haul telecommunications optical fibers are perfect waveguides for light. However, the monitoring of the transmitted optical power generally demands the conversion from optical pulses into electrical signals, which relies on discrete photodetectors made by silicon or III-V materials. Here, we report an integrated fiber-optic detector by dip coating PbS colloidal quantum dots onto a pretreated specialty optical fiber. We characterized the readout currents at 1550nm as a function of the optical power, the bias voltage and the distance between the contact electrodes. Ways of improving the responsivity and the potential applications in in-line multi-wavelength optical power measurement are discussed as well.

© 2017 Optical Society of America

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