Coherent light generators – Particular component circuitry – Optical pumping
Patent
1985-05-02
1987-06-30
Sikes, William L.
Coherent light generators
Particular component circuitry
Optical pumping
350 9610, 350 9629, 350 9630, 350 9616, 372 6, 372 92, 372 96, 372 97, 372 99, G02B 629, H01S 330, H01S 308
Patent
active
046765832
ABSTRACT:
An optical fiber structure having resonant characteristics useful for coupling to an optical transmission line for removing selected wavelengths of light energy includes a light guiding structure, such as an optical fiber waveguide, which conditionally operates as a resonant cavity responsive to resonance of at least one other resonant cavity. In one embodiment, an extrinsically defined or adscititious reflectance is formed in the waveguide segment by laterally coupling an etalon cavity to the waveguide segment. In another embodiment, the waveguide segment is coupled to one or more resonant loops to form a conditional resonant loop cavity which includes the other loops. The resonant wavelength spacing for the conditional cavity and its cooperating resonant cavity are made different from one another with only one wavelength coresonantly supported in both cavities. In operation, the structure is coupled to a multi-channel optical transmission line for selectively removing a portion of the energy of a desired channel by resonating the desired wavelength in both the conditional cavity and its cooperating resonant cavity. Additionally, an active gain material can be provided in the conditional cavity and pumped by a pumping source to increase the gain of the desired wavelength.
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EP published Abstract of U.S. Appln. S.N. 448,707, filed 12/10/82, published 6/27/84.
Haavisto et al, "Resonance Effects in Low-Loss . . . ", Optics Lett., vol. 5, No. 12, 12/80 pp. 10-12.
Caufield Francis J.
Healy Brian M.
Polaroid Corporation
Sikes William L.
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