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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 7 — Apr. 8, 2013
  • pp: 8214–8219

Optical fiber amplifiers based on PbS/CdS QDs modified by polymers

Xiaolan Sun, Libin Xie, Wei Zhou, Fufei Pang, Tingyun Wang, Alan R. Kost, and Zesheng An  »View Author Affiliations

Optics Express, Vol. 21, Issue 7, pp. 8214-8219 (2013)

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Optical fiber amplifiers based on PbS/CdS semiconductor quantum dots (QDs) modified by an amphiphilic polymer were demonstrated. Well-defined QDs and an amphiphilic copolymer were first prepared and the amphiphilic copolymer was then used to disperse the QDs into silica sol to allow uniform and reproducible incorporation of QDs into the silica coating of the optical fibers. QD-doped silica sol was deposited on the fusion tapered fiber coupler via dip-coating. A 1550 nm semiconductor light emitting diode as the signal source and a 980 nm laser diode as the pump source were injected into the fiber coupler simultaneously. Through evanescent wave excitation, a signal gain as high as 8 dB was obtained within the wavelength range between 1450 and 1650 nm. In addition, the optical fiber amplifiers based on PbS/CdS QDs showed enhanced thermal stability when compared to amplifiers based on PbS QDs.

© 2013 OSA

OCIS Codes
(060.2320) Fiber optics and optical communications : Fiber optics amplifiers and oscillators
(060.4510) Fiber optics and optical communications : Optical communications
(160.4236) Materials : Nanomaterials

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: March 1, 2013
Manuscript Accepted: March 6, 2013
Published: March 28, 2013

Xiaolan Sun, Libin Xie, Wei Zhou, Fufei Pang, Tingyun Wang, Alan R. Kost, and Zesheng An, "Optical fiber amplifiers based on PbS/CdS QDs modified by polymers," Opt. Express 21, 8214-8219 (2013)

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