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PRINCIPLES OF DFB LASERS
CHOICE OF LASER STRUCTURES
12 other sections not shown
active layer active-layer thickness Anritsu bandgap wavelength bandwidth beam divergence bias tee Bragg frequency contact resistance coupling coefficient David Sarnoff Research depth DFB laser developed dielectric diffracted beam intensity diffraction diode lasers distributed Bragg reflector Distributed Feedback Lasers doped effective index emission epilayer Estimated diffusion profile Fabry-Perot facet far-field pattern Figure first-order grating frequency response function of waveguide gain curve grating period grating shape growth heat sink temperature high-speed InGaAsP inside the ridge junction inside L-mount lasing wavelength lateral index step layer thicknesses lensed fiber lower threshold measured modulation Near-field intensity perpendicular neff obtained optical overgrowth p-n junction parameters peak photograph of grating Photoluminescence photoresist profile for Cd pulse Refractive index regrowth ridge region ridge width ridge-guide DFB laser ridge-guide laser samples Sarnoff Research Center sawtooth grating Schematic second-order gratings shown in Fig shows single-mode spacer spectra spectrum strip line surface threshold gain wafer waveguide layer waveguide thickness