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  • Advances in Near Field Holographic Grating Mask Technology
    Near field holographic (NFH) printing of first-order grat-ings using fused silica phase grating masks ' and polymer replica gratings4 has been demonstrated to be an alternative Method of printing grating structures for semiconductor lasers.2"4 A similar technique but using far field holography has
  • Advanced Fiber Grating Technology and Products (.pdf)
    covering a large area, unlimited by the length of the cable. (up to a distance of 25 Km.). Microsoft Word - Advanced Fiber grating technology and products_updated.doc Advanced Fiber Gratings Technology and products can help. solve many difficult industrial problems for sensor applications
  • 8-Wavelength DBR Laser Array Fabricated with a Single-Step Bragg Grating Printing Technique
    for manufacturing. Holographic exposure has become the standard grating fabrication technique for guided-wave optoelectronic devices such as DFB or DBR lasers.
  • Volume Holographic Grating Wavelength Stabilized Laser Diodes
    The use of volume holographic gratings (VHGs) to stabilize lasers dates to the mid-1980s with 1.55 µm-semiconductor lasers. Accuwave Corporation followed by applying optical feedback to visible and near infrared lasers from 670 to 840 nm. However, at that time, lifetime issues with LiNbO3-based
  • Laser Tuning with Diffraction Gratings
    Light incident on a diffraction grating is dispersed away from the grating surface at an angle which depends on the wavelength, so a grating can be used to select a narrow spectral band from a much wider band. There are two main methods for selecting a narrow spectral band of light, Littrow
  • High Power 7-GHz Bandwidth External-Cavity Diode Laser Array and its Use in Optically Pumping Singlet Delta Oxygen (.pdf)
    Using a 14mm thick volume Bragg grating, spectral bandwidth of a cw-operated diode laser array is narrowed to 7GHz 9FWHM). High power 7-GHz bandwidth external-cavity. diode laser array and its use in optically. pumping singlet delta oxygen. Lei S. Meng, Boris Nizamov, Pratheepan Madasamy i, Jason K
  • Introduction to reflective aberration corrected holographic diffraction gratings
    The reflective diffraction grating is the heart of most spectroscopy systems today. Before the 1950's, the prism. was the primary dispersive element in spectrometer designs. The use of an epoxy replication process in the. 1950's led to the mass production of plane ruled reflective diffraction
  • Fiber Optics Devices Based on VHGs
    We report on Volume Bragg Grating (VBG) technology for a spectrum of applications in optical components ranging from fixed or tunable filters, ROADM, beam combiners and pump stabilizers. VBGs allow higher integration and added functionality than Fiber Bragg Gratings. Volume Bragg Grating (VBG

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