Optical waveguides – Optical fiber waveguide with cladding – Utilizing nonsolid core or cladding
Reexamination Certificate
2003-04-08
2008-10-21
Vanore, David A. (Department: 2881)
Optical waveguides
Optical fiber waveguide with cladding
Utilizing nonsolid core or cladding
C385S043000
Reexamination Certificate
active
07440664
ABSTRACT:
A microstructured optical waveguide is formed to include a periodic sequence of “plugs” of optically active material within the inner cladding air tunnels. The plugs are utilized as a grating structure for generating resonant and periodic structures. The waveguide (in one embodiment, an optical fiber) is tunable by changing the spacing of the plugs (e.g., heating the structure, changing the pressure within the structure, etc.), or by modifying the initial spacing of the plugs during the formation of the microstructured optical waveguide (i.e., by modifying the “dipping frequency” of the waveguide into a reservoir of optically active material). In general, any number of different types of optically active material may be used to form the plugs, where two or more different materials may be used in the same structure, and introduced in an alternating fashion.
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C. Kerbage, B. J. Eggleton, “Microstructured Optical Fibers for Integrated Tunability of Photonic Devices” Optics and Photonics, OSA, Washington, DC, US vol. 13, No. 9, Sep. 2002, pp. 38-42.
Eggleton Benjamin J.
Ging Justin D.
Hale Arturo
Kerbage Charles
Fitel USA Corp.
Johnston Phillip A.
Koba Wendy W.
Vanore David A.
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