2 December 1992 Modeling and matching of directly modulated diode lasers for phased-array radar applications
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Abstract
This paper describes laser measurement and modelling techniques pursuant to developing impedance matching networks for bandwidths over an octave. Models presented include a novel large signal model that has a measurement based nonlinear photon resistance term to induce curvature into the L-I characteristic of the laser. It is found that predicted intermodulation performance varied about 1 dB between the linear and nonlinear photon resistance models implying the dominate nonlinearity is due to the I-V characteristic of the laser. Finally, the models are used with microwave design tools to synthesize and optimize a Chebyshev impedance matching network employing a Norton equivalent transformer. The impedance matching circuit results in a simulated 10 dB improvement over resistive matching with a VSWR of less than 1.5 over the band of interest.
© (1992) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Brad Kanack, Brad Kanack, Charles L. Goldsmith, Charles L. Goldsmith, "Modeling and matching of directly modulated diode lasers for phased-array radar applications", Proc. SPIE 1703, Optical Technology for Microwave Applications VI and Optoelectronic Signal Processing for Phased-Array Antennas III, (2 December 1992); doi: 10.1117/12.138402; https://doi.org/10.1117/12.138402
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