Optical waveguides – With optical coupler – Input/output coupler
Patent
1998-11-12
2000-12-05
Palmer, Phan T.H.
Optical waveguides
With optical coupler
Input/output coupler
385 33, 385 31, 385143, 385145, G02B 632
Patent
active
06157757&
ABSTRACT:
We have determined that unlike the most multimode silica fiber, multimode polymer fiber often exhibits a delay characteristic that has a broad low dispersion region where propagation delay of spatially restricted optical pulses remains relatively constant. This low dispersion region is centered around the center axis of the fiber core as a function of launch position. By directing a transmitted optical pulse to this region, we have determined that optical pulse dispersion can be significantly reduced without the need for using the prior art technique of using a single mode fiber spliced in series with the multimode fiber to reduce dispersion. A polymer fiber based optical transmission system using this arrangement exhibits relaxed alignment tolerances between the optical source and polymer fiber, while reducing dispersion and increasing bandwidth-length product.
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patent: 4941730 (1990-07-01), Takase et al.
patent: 5416862 (1995-05-01), Haas et al.
Applications of Perfluorinated Polymer Fibers to Optical Transmission, published on Sep. 22, 1997 in Proceedings of Seventh International Plastics Optical Fiber Conference, pp. 29-30.
Giaretta Giorgio
White Whitney
Caccuro John A.
Lucent Technologies - Inc.
Palmer Phan T.H.
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