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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 6 — Mar. 15, 2010
  • pp: 5964–5973

Coupled fiber taper extraction of 1.53 μm photoluminescence from erbium doped silicon nitride photonic crystal cavities

Gary Shambat, Yiyang Gong, Jesse Lu, Selçuk Yerci, Rui Li, Luca Dal Negro, and Jelena Vučković  »View Author Affiliations

Optics Express, Vol. 18, Issue 6, pp. 5964-5973 (2010)

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Optical fiber tapers are used to collect photoluminescence emission at ~1.5 µm from photonic crystal cavities fabricated in erbium doped silicon nitride on silicon. In the experiment, photoluminescence collection via one arm of the fiber taper is enhanced 2.5 times relative to free space collection, corresponding to a net collection efficiency of 4%. Theoretically, the collection efficiency into one arm of the fiber-taper with this material system and cavity design can be as high as 12.5%, but the degradation of the experimental coupling efficiency relative to this value mainly comes from scattering loss within the short taper transition regions. By varying the fiber taper offset from the cavity, a broad tuning range of coupling strength and collection efficiency is obtained. This material system combined with fiber taper collection is promising for building on-chip optical amplifiers.

© 2010 OSA

OCIS Codes
(060.2310) Fiber optics and optical communications : Fiber optics
(130.3120) Integrated optics : Integrated optics devices
(230.5750) Optical devices : Resonators
(230.5298) Optical devices : Photonic crystals

ToC Category:
Photonic Crystals

Original Manuscript: January 4, 2010
Revised Manuscript: February 25, 2010
Manuscript Accepted: March 1, 2010
Published: March 10, 2010

Gary Shambat, Yiyang Gong, Jesse Lu, Selçuk Yerci, Rui Li, Luca Dal Negro, and Jelena Vučković, "Coupled fiber taper extraction of 1.53 μm photoluminescence from erbium doped silicon nitride photonic crystal cavities," Opt. Express 18, 5964-5973 (2010)

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