Method and apparatus to enable adaptive equalization at high bandwidths when using single-mode VCSELs over multimode fibers
US6973105B2 · kind B2 · utility
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17Claims
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Key dates
| Filing date | Mar 21, 2003 |
| Grant date | Dec 6, 2005 |
| Priority date | — |
| Expiry date | Dec 7, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S2301/166
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method and apparatus of using an input signal from a single-transverse mode vertical-cavity surface-emitting laser (VCSEL) with a multimode fiber (MMF) link to enable improved stabilization in time variation and improved modal dispersion of the output signal to facilitate the use of adaptive equalization techniques. The improvement results from using a conditioned launch of the input signal from the VCSEL into the MMF link. The increase in performance may be measured by the improved impulse response and an improved bandwidth-distance product of the MMF link.
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