LD 8900HDR Highest Dynamic Range; Fast, Accurate Measurements - Photon Inc - #1
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PHOTO M me 6878 Santa leresa Blvd. ban (ose, CA 95119-120:* Précision Bearn Profiling ICI: 40&226-IIM» Fax; 408,226,1025 vvww.p ho ton - i ne com LD 8900HDR Highest Dynamic Range; Fast, Accurate Measurements The photonics community needs a method for very high dynamic range measurements of oplical fiber, waveguide and olher oplical components. Advances in DWDM technology, increased deploymenl of standard fibers, and the growing development of specialty fibers ail require more accurate characterization Unlil now, thèse high dynamic range measurements of irradiant light (lux have been very difficull lo obtain. Photon has the solution: our new goniometric radiometer, the LD 8900HDR Far-Ficld Profiler. Measurement Parameters The LD 8900HDR Far-Field Profiler uses goniometric melhodology to measure tnie 3-dimensional profiles of optical components with up to 93 dB dynamic range. Ail measurements arc taken with the emitting fiber, ptanar waveguide, laser diode or LED inserted directly into the center of the instrumentas radial measurement arca. For optical fiber, the far-field distribution pattem is acquired without bending the fiber Bending the fiber can cause analysis and reporting inaccuracies. Parameters measured for optical fiber are: ♦ Mode Field Diameter (MFD) - used to evaluate losses due to mismatch at connections of fibers and fiber components. ♦ Effective Area (A^) - used to assess nonlinear effects. ♦ Numerical Aperture (NA) - a measure of the angular width of the fiber output. NA is equal to the sine of the half angle (sin 6/2) at a specified percentage of the peak value. The Model LD 8900HDR analysis software calculâtes thesc optical fiber parameters from the far-field profile, the method described in the TIA/KIA FOTP-191 standard for MFD requiring a minimum of 50 dB for proper measurement, The T1A/EIA FOTP-132 standard for A^ requircs a minimum of 50 dB for proper measurements as wcll. This wider dynamic range provides greater signal-to-noisc détail in the tails of the far-field pattem. Real-time data gathering and reporting of sample optical fibers or other sources is valuable for manufacturing and quality assurance évaluation. Hardware and Computer llie LD 8900HDR is a modular system diat allows either onc-dimcnsional or tlircc-dimciisional measurements. The 3D module is easily exchanged with the 1D hardware, and the System can be -purchased with the 1D hardware, the 3D hardware or both. Tliere are specially designed fiber mounting clips available for both the 1D and 3D configurations with a specially modified fiber cleaver ;uul clip thaï guarantees proper fiber aligiunent In addition, custom mounting devices are available for high dynamic range measurements of waveguides, laser diodes and LKDs. u3 8900hdr B020706476