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Comparison of 1.3-μm AlGaInAs/AlGaInAs Strain-Compensated Multiple-Quantum-Well Laser Diodes with/without GaInAsP and AlGaInAs Graded-Composition Layers

  • Ming Yuan Wu*
  • , Po Hsun Lei
  • , Chia Lung Tsai
  • , Chih Wei Hu
  • , Meng Chyi Wu
  • , Wen Jeng Ho
  • *Corresponding author for this work
  • National Tsing Hua University
  • Diwan College of Management
  • Chunghwa Telecom Co. Ltd.

Research output: Contribution to journalJournal Article peer-review

Abstract

In this letter, we have fabricated the 1.3-μm Al0.20Ga 0.11In0.69As/Al0.30Ga0.26In 0.44As strain-compensated multiple-quantum-well laser diodes (LDs) with the GaInAsP and AlGaInAs graded-composition layers above the upper and below the lower cladding layers, respectively. This new LD structure exhibits a lower threshold current of 9 mA, a higher characteristic temperature of 80 K between 20 and 70°C, a little red-shift rate of 0.4 nm/°C and a higher relaxation frequency of 8.14 GHz at 80 mA and 20°C. Without coupling loss and damping factor, the 3 dB bandwidth of 13.1 GHz can be achieved. These characteristics are better than those LDs without the graded-composition layers.

Original languageEnglish
Pages (from-to)L1507-L1508
JournalJapanese Journal of Applied Physics
Volume42
Issue number12 B
DOIs
StatePublished - 15 12 2003
Externally publishedYes

Keywords

  • AlGaInAs/InP
  • Semiconductor lasers

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