Note: Author names will be searched in the keywords field, also, but that may find papers where the person is mentioned, rather than papers they authored.Use a comma to separate multiple people: J Smith, RL Jones, Macarthur.Use these formats for best results: Smith or J Smith.For best results, use the separate Authors field to search for author names.
Use quotation marks " " around specific phrases where you want the entire phrase only.Question mark (?) - Example: "gr?y" retrieves documents containing "grey" or "gray".Asterisk ( * ) - Example: "elect*" retrieves documents containing "electron," "electronic," and "electricity".Improve efficiency in your search by using wildcards.Example: (photons AND downconversion) - pump.Example: (diode OR solid-state) AND laser.Note the Boolean sign must be in upper-case. Separate search groups with parentheses and Booleans.Keep it simple - don't use too many different parameters.The 2650 is particularly well-suited for characterizing large diameter preforms. All calculations provide essential feedback for preform process control. The alpha coefficient of multimode fiber preform profiles can be also be calculated. For single-mode fiber preforms, the profile data also yields equivalent step-index (ESI) profile parameters which enables prediction of the mode field diameter, cut-off wavelength and chromatic dispersion of the fiber that will be drawn from the preform. From the acquired index profile data, the 2650 calculates preform geometry metrics such as core diameter, preform outside diameter, and concentricity. The vertical design of the 2650 Preform Analyzer gives fiber manufacturers the ability to fully automate preform positioning, facilitating rapid and comprehensive characterization of preform structure. Fully automated characterization of optical fiber preforms
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