Short-cavity distributed Bragg reflector laser with an integrated tapered output waveguide

M. Chien, U. Koren, Thomas L Koch, B. I. Miller, M. Oron, M. G. Young, J. L. Demiguel

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

A distributed Bragg reflector strained-layer multiple-quantum-well laser at 1.5-μm wavelength with an integrated tapered waveguide beam expander is discussed. The far-field FWHMs in the lateral and vertical directions are 10 and 15°, respectively. A quantum efficiency of 17% out the tapered facet was measured with a corresponding threshold current of 28 mA. The alignment tolerances for coupling into a cleaved single-mode fiber are 9.5 and 7.5 μm FWHM in the lateral and vertical directions, respectively. A 3-dB improvement for single-mode fiber coupling using a SELFOC lens was obtained.

Original languageEnglish (US)
Pages (from-to)418-420
Number of pages3
JournalIEEE Photonics Technology Letters
Volume3
Issue number5
DOIs
StatePublished - May 1991
Externally publishedYes

Fingerprint

DBR lasers
Single mode fibers
Full width at half maximum
Waveguides
beam waveguides
waveguides
Distributed Bragg reflectors
Quantum well lasers
cavities
fibers
output
quantum well lasers
Bragg reflectors
Quantum efficiency
threshold currents
Semiconductor quantum wells
far fields
quantum efficiency
flat surfaces
Lenses

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Physics and Astronomy (miscellaneous)
  • Atomic and Molecular Physics, and Optics

Cite this

Short-cavity distributed Bragg reflector laser with an integrated tapered output waveguide. / Chien, M.; Koren, U.; Koch, Thomas L; Miller, B. I.; Oron, M.; Young, M. G.; Demiguel, J. L.

In: IEEE Photonics Technology Letters, Vol. 3, No. 5, 05.1991, p. 418-420.

Research output: Contribution to journalArticle

Chien, M. ; Koren, U. ; Koch, Thomas L ; Miller, B. I. ; Oron, M. ; Young, M. G. ; Demiguel, J. L. / Short-cavity distributed Bragg reflector laser with an integrated tapered output waveguide. In: IEEE Photonics Technology Letters. 1991 ; Vol. 3, No. 5. pp. 418-420.
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