Two-step laterally tapered spot-size converter 1.55-/spl mu/m DFB laser diode having a high slope efficiency

Two-step laterally tapered spot-size converter 1.55-/spl mu/m DFB laser diode having a high slope efficiency

We demonstrate a two-step lateral tapered 1.55-mum 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 degC and 85 degC, respectively. The SSC DFB LD fabricated by using a nonselective grating process has a doubl...

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Veröffentlicht in:IEEE photonics technology letters 2006-10, Vol.18 (20), p.2138-2140
Hauptverfasser: Park, S.W., Han, J.H., Han, Y.T., Park, S.S., Yoon, B.Y., Kim, B.K., Sung, H.K., Song, J.I.
Format: Artikel
Sprache:eng
Schlagworte:
Converters
Diodes
Distributed feedback lasers
Laser diodes
Photonics
Ridges
Waveguides
Wavelengths
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Zusammenfassung:We demonstrate a two-step lateral tapered 1.55-mum 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 degC and 85 degC, 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-mum wavelength and shows a far-field pattern in horizontal and vertical directions of 7.3deg and 11.6deg, respectively
ISSN:1041-1135
1941-0174
DOI:10.1109/LPT.2006.883169