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  • Distributed Feedback Semiconductor Lasers
    Distributed Feedback Semiconductor Lasers. This text covers the materials, operation and design strategies of DFB lasers. It provides detailed accounts of large-signal time-domain numerical modeling techniques, which can be extended to optical systems and components other than DFB lasers. Books24x7
  • Optical Feedback in Photodigm's Laser Diodes - Application Note
    External feedback effects to semiconductor lasers of all varieties has been well studied [1]-[3]. These feedback effects impact all semiconductor lasers equally from Fabry-Perot (FP) lasers to. distributed feedback (DFB) lasers to distributed Bragg reflector (DBR) lasers.
  • Laser Diodes and Pigtailing
    the polarization check out Princetel's rotatable polarized light source. Back Scattering. All lasers are sensitive to optical back-scattering since it causes the laser frequency to drift and the power to subsequently vary due to the bell curve of the laser's gain profile. DFB (Distributed Feedback) lasers
  • High-Performance Wavelength-Locked Diode Lasers (.pdf)
    wavelength-selective feedback. which locks the laser to one (or a few) longitudinal modes. The two most common approaches utilized in the high. power diode laser arena are internal buried distributed Bragg gratings (DFBs) [4] and external volumetric Bragg gratings. (also commonly referred to as VHGs for volume
  • Laser Triangulation Sensors
    these sensors are used in process monitoring and closed-loop feedback control systems. Proximity type laser triangulation sensors are much less expensive and are typically used to detect the presence of a part, or used in counting applications. The following paper describes characteristics of high
  • Analog and Digital Modulation of LQx and DLx Series Laser Diode Modules
    The LQx series Fabry-Perot laser diode modules offers the most precise temperature control available from Newport Corporation. The DLx Series Distributed Feedback (DFB) Laser Source modules offer exceptionally stable wavelength and narrow spectral width. The LQC and the DLC series represent laser
  • Single-mode Semiconductor Reference Oscillator Development for Coherent Detection Optical Remote Sensing Applications
    High power single mode, tunable, narrow linewidth semiconductor lasers in the 2.05-µm wavelength region are needed for coherent detection optical remote sensing applications. 2.05-µm Fabry Perot (FP) and distributed feedback (DFB) ridge waveguide lasers fabricated from epitaxially grown InGaAsSb
  • Fiber Optic Rotary Joints
    suddenly shows significantly higher wow, it is almost certain that the FORJ is faulty. Otherwise, the most likely cause is somewhere else, such as faulty connectors or broken fibers. Return Loss: All laser sources, especially DFB (distributed feedback) lasers, are sensitive to optical reflection, which