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| Number | Title | Issue Date |
| 6640027 | Gain flattening tunable filter An optical apparatus includes an optical fiber. A plurality of individual optical fiber deformation structures are positioned adjacent along a length of the optical fiber. Each of an individual optical fiber deformation structure introduces a mechanical o... | 10/28/2003 |
| 6631224 | Tunable filter with core mode blocker An optic apparatus includes an optical fiber with a cladding surrounding a core and a core-mode blocker included in at least a portion of an interactive region of the optical fiber. A mode coupler is coupled to the optical fiber and couples a first mode t... | 10/07/2003 |
| 6539148 | Channel equalizer with acousto-optic variable attenuators An optical communication assembly includes a demultiplexer coupled to an input fiber, a multiplexer coupled to an output fiber and a plurality of optical fibers. Each optical fiber is coupled to one or both of the demultiplexer and multiplexer. A pluralit... | 03/25/2003 |
| 6535665 | Acousto-optic devices utilizing longitudinal acoustic waves An acousto-optic filter includes an optical fiber with a longitudinal axis, a core and a cladding in a surrounding relationship to the core. The optical fiber has multiple cladding modes. At least one acoustic wave generator is included and made of a suff... | 03/18/2003 |
| 6535324 | Bi-directional wavelength-selective optical data apparatus An optical data apparatus has a first polarization splitter configured to receive an input and split the input into first and second orthogonal polarizations. A second polarization splitter is included and configured to combine the first and second orthog... | 03/18/2003 |
| 6532323 | Acousto-optic filter An acousto-optic filter has a non-birefringent single mode optical fiber with a longitudinal axis, a core and a cladding in a surrounding relationship to the core. The optical fiber has multiple cladding modes and a single core mode that is guided along t... | 03/11/2003 |
| 6532322 | Channel equalizer with acousto-optic variable attenuators An optical communication assembly has an optical cross connect coupled to a first, a second, a third and a fourth set of optical fibers. A first demultiplexer is coupled to a first input fiber and the first set of optical fibers and a second demultiplexer... | 03/11/2003 |
| 6510261 | Acousto-optic variable attenuator with active cancellation of back reflections An acousto-optic filter includes an optical fiber with a first region and a second region. A first acoustic wave generator is coupled to optical fiber. The first acoustic wave generator produces a first acoustic wave that travels in a first direction in t... | 01/21/2003 |
| 6357913 | Add/drop acousto-optic filter A drop AOTF has a first AOTF that includes an optical fiber with a longitudinal axis, an acoustic wave propagation member with a proximal end and a distal end and an acoustic wave propagation member. The acoustic wave propagation member propagating an aco... | 03/19/2002 |
| 6343165 | Optical add drop multiplexer An optical add/drop multiplexer includes a mode converter. A first mode coupler is coupled to an input of the mode converter. A second mode coupler is coupled to an output of the mode converter. The mode converter includes an optical fiber with multiple c... | 01/29/2002 |
