Bus optical fiber including low mode volume light source optimally aligned
First Claim
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1. A distribution optical fiber network, comprising:
- a multimode optical fiber;
N side taps disposed serially on the fiber, N being an integer greater than 1;
means for injecting an optical signal into the fiber such that an initial distribution of light modes supported by the fiber from light emitted by the injecting means is lower than an equilibrium light mode distribution for the fiber.
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Abstract
A distribution optical fiber network includes a light source having a mode volume less than a distribution optical fiber, the light source being connected to the fiber so as to minimize the number and order of modes initially supported by the fiber by aligning an optical center of the light source with a geometric center of the fiber.
16 Citations
17 Claims
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1. A distribution optical fiber network, comprising:
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a multimode optical fiber; N side taps disposed serially on the fiber, N being an integer greater than 1; means for injecting an optical signal into the fiber such that an initial distribution of light modes supported by the fiber from light emitted by the injecting means is lower than an equilibrium light mode distribution for the fiber. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A distribution optical fiber network, comprising:
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a multimode optical fiber; N side taps disposed serially on the fiber, N being an integer greater than 1; means for injecting an optical signal into the fiber such that a first tap on the fiber closest to the injecting means attenuates the optical signal by an amount which is less than an amount of attenuation which the first tap would induce to the optical signal if the injecting means were oriented relative to the fiber so as to increase a transmission intensity through the fiber if no taps were disposed thereon.
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14. A distribution optical fiber network, comprising:
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a multimode optical fiber; N side taps disposed serially on the fiber, N being an integer greater than 1; means for injecting an optical signal into the fiber such that a first tap on the fiber closest to the injecting means attenuates the optical signal by an amount which is less than an amount of attenuation which the first tap would induce to the optical signal if the injecting means was repeatedly reoriented relative to the fiber at second and third positions on opposite sides of a first position whereat the injecting means is actually oriented.
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15. A method of connecting an optical light source to an optical fiber to which is or will be connected a plurality of distributed taps, comprising the steps of:
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connecting an optical light source to an optical fiber so as to inject an optical signal therein; monitoring an intensity of the optical signal in the fiber downstream of the light source by withdrawing part of the optical signal from the fiber through a side of the fiber at a bend; adjusting a position of the connected optical light source relative to the fiber until a desired magnitude of the withdrawn optical signal part is found, the desired magnitude being less than 1 on first and second interim maximum magnitudes obtained when the optical light source is moved in opposite directions from a position where the desired magnitude is obtained, the desired position being between positions whereat the first and second interim maximum magnitudes are obtained; creating a plurality of macrobends in the optical fiber downstream from the optical light source to create sufficiently large cones of acceptance thereat such that a like plurality of optical signals can be injected into or withdrawn from the optical fiber at the plurality of macrobends. - View Dependent Claims (16, 17)
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Specification