Study of wavelength shift in InGaAs/InAlGaAs QW DFB lasers based on laser parameters from a comparison of experiment and theory

Hillmer, Hartmut; Hansmann, S.; Burkhard, H.; Walter, H.; Krost, A.; Bimberg, D.

doi:10.1109/3.328602

Cited by 18 publications

(12 citation statements)

References 27 publications

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“…Combining this value with the simple formula (15), and neglecting the heat transfer between both sections, we expect a tuning rate of . = 1.2 GHz/mA, (16) which compares well with the mean value 1.3 GHz/mA from the measurements of Feiste et ad. A further detailed investigation of this effect must be left for a separate paper.…”

Section: Mode Beating Self Pulsationssupporting

confidence: 71%

<title>Self pulsations by mode degeneracy in two-section DFB lasers</title>

et al. 1995

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We show theoretically, that the detuning between the stop bands of the two DFB sections gives rise to different self pulsation types: i) dispersive self Q-switching of a single mode (around 10 GHz repetition rate) or ii) beating oscillations between two modes of equal threshold gain (more than 100 GHz). Our analysis is based on the dynamic coupled wave equations, together with carrier rate equations. Using a mode expansion of the optical field, we perform a stability and bifurcation analysis as well as a direct numerical integration of the full equations, which demonstrates the appearence of the two self pulsation types. In the examples investigated, we find finite self pulsation islands in the plane spaned by the two currents, which is in qualitative agreement with published experimental results.

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Section: Mode Beating Self Pulsationssupporting

confidence: 71%

<title>Self pulsations by mode degeneracy in two-section DFB lasers</title>

et al. 1995

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“…Note that this problem exists for all types of EBL defined DFB gratings. Comparing experimental DFB laser data with results of model calculations, 13,16,23 we obtain surprisingly good agreement. This demonstrates that the stitching errors and other uncertainties mentioned below are much smaller than expected.…”

Section: Description Of the Lithographysupporting

confidence: 59%

Ultrahigh resolution chirped distributed feedback gratings fabricated by electron-beam lithography using bent waveguides for low-cost photonic components

Hillmer¹

1995

Journal of Vacuum Science &Amp; Technology B: Microelectronics and Nanometer Structures Processing, Measurement, and Phenomena

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“…The frequency responses at different bias currents are shown in Figure 6. As we know, the wavelength rises with the increasing bias current above threshold [16], and the measured wavelengthcurrent curve of a DFB-LD is shown in the inset of Figure 5, from which the slope of the curve at around 55 mA is estimated to be 2.2 pm/mA. We adjusted the DFB laser wavelength by decreasing the bias current from 54.6 to 54 mA with a step of 0.3 mA and the corresponding frequency responses are shown in Figure 6(a-c) (lower).…”

Section: Measurement Of Wavelength Variationmentioning

confidence: 95%

Frequency response of fiber ring resonator and its application in DFB laser wavelength variation measurement

Chen

Zhu

Ren

et al. 2009

Micro & Optical Tech Letters

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In this article, a novel K-shaped dual-band microstrip patch antenna with a shorting pin for dual-band , was designed, fabricated, and tested. The impedance bandwidths were 221 MHz (5.145-5.366 GHz) and 187 MHz (5.695-5.882 GHz), covering the required WLAN bandwidth (5.2/5.8 GHz). The gain obtained from 3.66 to 4.58 dBi matched the wireless LAN specifications. The results demonstrate that the proposed novel K-shaped dual-band microstrip patch antenna with a shorting pin can be applied to dual-band WLAN systems (5.2/5.8 GHz). ACKNOWLEDGMENTS

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Study of wavelength shift in InGaAs/InAlGaAs QW DFB lasers based on laser parameters from a comparison of experiment and theory

Cited by 18 publications

References 27 publications

<title>Self pulsations by mode degeneracy in two-section DFB lasers</title>

<title>Self pulsations by mode degeneracy in two-section DFB lasers</title>

Ultrahigh resolution chirped distributed feedback gratings fabricated by electron-beam lithography using bent waveguides for low-cost photonic components

Frequency response of fiber ring resonator and its application in DFB laser wavelength variation measurement

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