Two-step laterally tapered spot-size converter 1.55-μm DFB laser diode having a high slope efficiency

S. W. Park, Jae Ho Han, Y. T. Han, S. S. Park, B. Y. Yoon, B. K. Kim, H. K. Sung, J. I. Song

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

We demonstrate a two-step lateral tapered 1.55-μm spot-size converter distributed feedback laser diode (SSC DFB LD) having slope efficiencies as high as 0.457 and 0.319 mW/mA measured at 25 °C and 85 °C, respectively. The SSC DFB LD fabricated by using a nonselective grating process has a double core waveguide structure including a planar buried heterostructure type active waveguide and a ridge type passive waveguide. The fabricated SSC DFB LD operates at 1.553-μm wavelength and shows a far-field pattern in horizontal and vertical directions of 7.3° and 11.6°, respectively.

Original languageEnglish
Pages (from-to)2138-2140
Number of pages3
JournalIEEE Photonics Technology Letters
Volume18
Issue number20
DOIs
Publication statusPublished - 2006 Oct 15
Externally publishedYes

Fingerprint

Distributed feedback lasers
distributed feedback lasers
converters
Semiconductor lasers
Waveguides
semiconductor lasers
slopes
waveguides
far fields
Heterojunctions
ridges
gratings
Wavelength
wavelengths

Keywords

  • Current blocking layer
  • Slope efficiency
  • Spot-size converter distributed feedback laser diode (SSC DFB LD)

ASJC Scopus subject areas

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

Cite this

Two-step laterally tapered spot-size converter 1.55-μm DFB laser diode having a high slope efficiency. / Park, S. W.; Han, Jae Ho; Han, Y. T.; Park, S. S.; Yoon, B. Y.; Kim, B. K.; Sung, H. K.; Song, J. I.

In: IEEE Photonics Technology Letters, Vol. 18, No. 20, 15.10.2006, p. 2138-2140.

Research output: Contribution to journalArticle

Park, S. W. ; Han, Jae Ho ; Han, Y. T. ; Park, S. S. ; Yoon, B. Y. ; Kim, B. K. ; Sung, H. K. ; Song, J. I. / Two-step laterally tapered spot-size converter 1.55-μm DFB laser diode having a high slope efficiency. In: IEEE Photonics Technology Letters. 2006 ; Vol. 18, No. 20. pp. 2138-2140.
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AU - Yoon, B. Y.

AU - Kim, B. K.

AU - Sung, H. K.

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