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Author: search.filters.author.Wang, SCSubject: search.filters.subject.optical fiber devices

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Now showing 1 - 6 of 6
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    MOCVD growth of high-performance InGaAsP/InGaP strain-compensated VCSELs with 850 nm emission wavelength
    (2004-01-19)
    Kuo, HC
    ;
    Chang, YS
    ;
    Lin, CF
    ;
    Lu, TC
    ;
    Wang, SC
    We present in this paper the metalorganic chemical vapor deposition growth and characterization of high-performance 850 nm InGaAsP/InGaP strain-compensated MQWs vertical-cavity surface-emitting lasers (VCSELs). The InGaAsP/InGaP MQWs growth condition was optimized using photoluminescence. These VCSELs exhibit superior characteristics, with threshold currents similar to 0.4 mA, and slope efficiencies similar to 0.6 mW/mA. The threshold current change is less than 0.2 mA and the slope efficiency drops by less than similar to 30% when the substrate temperature is raised from room temperature to 85degreesC. These VCSELs also demonstrate high-speed modulation bandwidth up to 12.5 Gbit/s from 25degreesC to 85degreesC. (C) 2003 Elsevier B.V. All rights reserved.
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    MOCVD growth of highly strained InGaAs : Sb-GaAs-GaAsP quantum well vertical cavity surface-emitting lasers with 1.27 mu m emission
    (2004-12-10)
    Kuo, HC
    ;
    Yao, HH
    ;
    Chang, YH
    ;
    Chang, YA
    ;
    Tsai, MY
    1.27mum InGaAs:Sb-GaAs-GaAsP vertical cavity surface-emitting lasers (VCSELs) were grown by metalorganic chemical vapor deposition (MOCVD) with superior performance. The threshold current changes between 1.8 and 1.1 mA and the slope efficiency drops below similar to35% when the temperature is raised from room temperature to 70degreesC. With only 5 mA of bias current, the 3 dB modulation frequency response is measured to be 8.36 GHz which is suitable for 10Gb/s operation. The maximal bandwidth is estimated to 10.7GHz with modulation current efficiency factor MCEF) of similar to5.25GHz/(mA)(1/2). The results of InGaAs:Sb-GaAs-GaAsP VCSELs can reach a performance level comparable to GalnAsN VCSELs with better thermal stability and should be considered as a very promising candidate for 1.3 mum commercial applications. (C) 2004 Elsevier B.V. All rights reserved.
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    Single-mode 1.27-mu m InGaAs : Sb-GaAs-GaAsP quantum well vertical cavity surface emitting lasers
    (2005-01-01)
    Kuo, HC
    ;
    Chang, YH
    ;
    Chang, YA
    ;
    Lai, FI
    ;
    Chu, JT
    The 1.27-mum InGaAs:Sb-GaAs-GaAsP vertical cavity surface emitting lasers (VCSELs) were grown by metalorganic chemical vapor deposition and exhibited excellent performance and temperature stability. The threshold current varies from 1.8 to 1.1 mA and the slope efficiency falls less than similar to35% from 0.17 to 0.11 mW/mA as the temperature is raised from room temperature to 75 degreesC. The VCSELs continuously operate up to 105 degreesC with a slope efficiency of 0.023 mW/mA. With a bias current of only 5 mA, the 3-dB modulation frequency response was measured to be 8.36 GHz, which is appropriate for 10-Gb/s operation. The maximal bandwidth is estimated to be 10.7 GHz(1/2) with modulation current efficiency factor of similar to5.25 GHz/(mA)(1/2). These VCSELs also demonstrate high-speed modulation up to 10 Gb/s from 25degreesC to 70degreesC. We also accumulated life test data up to 1000 h at 70degreesC/10 mA.
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    High-speed modulation of InGaAs : Sb-GaAs-GaAsP quantum-well vertical-cavity surface-emitting lasers with 1.27-mu m emission wavelength
    (2005-03-01)
    Kuo, HC
    ;
    Chang, YH
    ;
    Yao, HH
    ;
    Chang, YA
    ;
    Lai, FI
    1.27-mum InGaAs: Sb-GaAs-GaAsP vertical-cavity surface-emitting lasers (VCSELs) were grown by metal-organic chemical vapor deposition and exhibited excellent performance and temperature stability. The threshold current changes from 1.8 to 1.1 mA and the slope efficiency falls less than similar to35% as the temperature raised from room temperature to 70 degreesC. With a bias current of only 5 mA, the 3-dB modulation frequency response was measured to be 8.36 GHz, which is appropriate for 10-Gb/s operation. The maximal bandwidth is measured,to be 10.7 GHz with modulation current efficiency factor (MCEF) of similar to5.25 GHz/(mA)(1/2). These VCSELs also demonstrate high-speed modulation up to 10 Gb/s from 25 degreesC to 70 degreesC.
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    10 Gbps InGaAs : Sb-G-aAs-GaAsP quantum well vertical cavity surface emitting lasers with 1.27 mu m emission wavelengths
    (2005-04-01)
    Chang, YH
    ;
    Kuo, HC
    ;
    Chang, YA
    ;
    Chu, JT
    ;
    Tsai, MY
    InGaAs:Sb-GaAs-GaAsP vertical cavity surface emitting lasers (VCSELs) with 1.27 mu m emission wavelength were grown by metal-organic chemical vapor deposition (MOCVD) and exhibited excellent performance and temperature stability. The threshold current changes from 1.8 to 1.1 mA and the slope efficiency falls less than similar to 35% as the temperature is increased from room temperature to 70 degrees C. With a bias current of only 5 mA, the 3 dB modulation frequency response was measured to be 8.36GHz, which is appropriate for 10Gb/s operation. The maximal bandwidth is measured to be 10.7GHz With a modulation current efficiency factor (MCEF) of similar to 5.25 GHz/(mA) 1/2. Bit error rates of less than 10(-12) are demonstrated for 10 Gb/s data transmission from 25 degrees C to 70'C. We also accumulated life test data up to 1000 h at 70 degrees C/10 mA.
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    MOCVD growth of highly strained 1.3 mu m InGaAs : Sb/GaAs vertical cavity surface emitting laser
    (2006-01-25)
    Chang, YA
    ;
    Chu, JT
    ;
    Ko, CT
    ;
    Kuo, HC
    ;
    Lin, CF
    In0.45Ga0.55As:Sb/GaAs (1.3 mu m) vertical cavity surface emitting lasers (VCSELs) were grown by metalorganic chemical vapor deposition (MOCVD). A In0.45Ga0.55As:Sb/GaAs quantum well (QW) exhibited an emission wavelength of 1.26 mu m with narrow fullwidth at half-maximum (FWHM) of 35.9meV. For the fabricated VCSEL with 5 mu m diameter oxide-confined aperture, a room-temperature (RT).threshold current of 2.1 mA and an output power of 0.9 mW with 1.3 mu m emission were obtained. The 3 dB modulation frequency was measured to be 7.6 GHz. (c) 2005 Elsevier B.V. All rights reserved.