Nonlinear optics in doped fibers. Final report, May 1, 1992--April 30, 1996

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The main objective of this contract was to study a novel scheme to obtain very strong third-order optical nonlinearities in fibers doped with a suitable absorber in order to produce low-power all-optical fiber switches. In these devices, a signal is switched from a first fiber to a second fiber by the application of an optimal pump of wavelength different from that of the signal. The pump acts on the nonlinearity of the fiber, resulting from the dopant present in the fiber core, to modify the fiber index. The switch is made of a fiber interferometer which transforms this index modulation ... continued below

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24 p.

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Digonnet, M.J.F. & Pantell, R.H. September 18, 1996.

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Description

The main objective of this contract was to study a novel scheme to obtain very strong third-order optical nonlinearities in fibers doped with a suitable absorber in order to produce low-power all-optical fiber switches. In these devices, a signal is switched from a first fiber to a second fiber by the application of an optimal pump of wavelength different from that of the signal. The pump acts on the nonlinearity of the fiber, resulting from the dopant present in the fiber core, to modify the fiber index. The switch is made of a fiber interferometer which transforms this index modulation into an amplitude modulation. The signal is switched as long as the pump is applied, and it returns to the first fiber when the pump is turned off. The incentive was to develop switches exhibiting the following properties: (1) low switching power, (2) a short nonlinear fiber to be able to utilize a short and thus environmentally stable interferometer, (3) fast response time, (4) broad range of signal wavelengths, particularly around 1.55 and 1.32 {micro}m, (5) pump wavelengths readily available from diode lasers, and (6) low signal loss. This research also involved the study of various fiber interferometers to determine the best possible switch architectures, in terms of pump power requirement, stability against environmental temperature fluctuations and possible pump-induced heating of the fiber. Switches are strongly needed for a large number of important applications. The rest of this report is a summary of the most important tasks carried out, and of the major discoveries made, under this contract.

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24 p.

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OSTI as DE97001777

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  • Other Information: PBD: 18 Sep 1996

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  • Other: DE97001777
  • Report No.: DOE/ER/12126--T2
  • Grant Number: FG03-92ER12126
  • DOI: 10.2172/418476 | External Link
  • Office of Scientific & Technical Information Report Number: 418476
  • Archival Resource Key: ark:/67531/metadc685929

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  • September 18, 1996

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  • July 25, 2015, 2:20 a.m.

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  • Nov. 5, 2015, 1:27 p.m.

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Digonnet, M.J.F. & Pantell, R.H. Nonlinear optics in doped fibers. Final report, May 1, 1992--April 30, 1996, report, September 18, 1996; United States. (digital.library.unt.edu/ark:/67531/metadc685929/: accessed September 20, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.