Optical coherence domain reflectometry
WebMar 15, 1990 · In the analysis of integrated optical waveguide structures by coherence-domain reflectometry, spatial resolution may be seriously impaired by second order dispersion of the waveguides under test and by the presence of structures in the source spectrum. An algorithm for evaluation of measured interferograms is presented to correct … WebTranslations in context of "techniques de réflectométrie à domaine temporel" in French-English from Reverso Context: Un dispositif à fibre optique mesure un paramètre externe, par exemple une température, en un nombre quelconque d emplacements différents en utilisant des techniques de réflectométrie à domaine temporel.
Optical coherence domain reflectometry
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WebDec 20, 2012 · Abstract: We present a novel method to significantly extend the measurement range of an optical frequency domain reflectometry (OFDR) beyond the laser coherence length for both discrete reflection (such as Fresnel reflection) and Rayleigh backscattering measurements. A key to the method is to increase the laser frequency … WebJan 15, 1992 · High-speed optical coherence domain reflectometry High-speed optical coherence domain reflectometry Opt Lett. 1992 Jan 15;17(2):151-3.doi: 10.1364/ol.17.000151. Authors E A Swanson, D Huang, M R Hee, J G Fujimoto, C P Lin, C A Puliafito PMID: 19784259 DOI: 10.1364/ol.17.000151 No abstract available
WebFIG. 1 shows a function block diagram illustrating a non-limiting example of an Optical Frequency Domain Reflectometry (OFDR) system 10 that can make high resolution interferometric measurements beyond the laser's coherence length. The coherence length is a distance that the laser light can travel and still have a predictable phase.
WebDec 29, 1999 · THe paper presents the analysis of the Optical Coherence- Domain Reflectometer with the Synchronized Coherence Function (OCDR-SCF). A brief summary … http://users.ece.northwestern.edu/~xli/files/papers/liu_05_ol.pdf
WebOct 7, 2014 · An improved Optical Coherence Domain Reflectometry (OCDR) system is provided. One embodiment of this OCDR system outputs a detector signal carrying image depth information on multiple modulation frequencies, where each modulation frequency corresponds to a different image depth. The image depth information from the detector …
WebThe roots of the OCT technique can be traced back to the early developments of optical low-coherence reflectometry (OLCR) in the telecommunication industry during the late 1980s. … flock safety camera costWebReverse time domain reflectometry (RTDR) is a technique developed by CHAR Services Inc., a division of Analysis Measurement Services Corporation (AMS). It tests the quality of the … great lakes woodworking companyWebWe report on a dynamic range enhanced optical frequency domain reflectometry distributed backscattering interrogator based on dual-loop composite optical phase-locked loop (OPLL). Exploiting simultaneously an acousto-optic frequency shifter based an external modulation loop and a piezo based direct modulation loop, the proposed composite OPLL allows … great lakes wood products negaunee miWebOct 10, 2014 · The proposed technique corrects for errors in depth measurements and resolution loss due to dispersion. The results show that, by using this technique, errors in thickness measurement are reduced... flock safety camera log inWebtime-domain pulsed plane wave that accommodates the complete frequency range of visible light. The center-scattering spectrum, I c, is obtained by per-forming a discrete Fourier … flock safety cameras vanWebOptical coherence domain reflectometry (OCDR) is proposed by synthesis of the coherence function for high-spatial-resolution diagnoses of optical systems and waveguide devices. By changing the output frequency of a laser diode using its direct frequency modulation characteristic, the coherence function having the shape of a delta function is synthesized. … great lakes worksheet printableWebWe describe a high-speed optical coherence domain reflectometer. Scan speeds of 40 mm/s are achieved with a dynamic range of >90 dB and a spatial resolution of 17 μm. Two … great lakes worm watch