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Multimode optical fiber systems with adjustable chromatic modal dispersion compensation
US8977091B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8977091-B2 |
| Application number | US-201213624248-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 21, 2012 |
| Priority date | Jul 12, 2012 |
| Publication date | Mar 10, 2015 |
| Grant date | Mar 10, 2015 |
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Abstract
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Multimode optical fiber systems with adjustable chromatic modal dispersion compensation are disclosed, wherein the system includes a VCSEL light source and primary and secondary optically coupled multimode optical fibers. Because the VCSEL light source has a wavelength spectrum that radially varies, its use with the primary multimode optical fiber creates chromatic modal dispersion that reduces bandwidth. The compensating multimode optical fiber is designed to have a difference in alpha parameter relative to the primary multimode optical fiber of −0.1≦Δα≦−0.9. This serves to create a modal delay opposite to the chromatic modal dispersion. The compensation is achieved by using a select length of the compensating multimode optical fiber optically coupled to an output end of the primary multimode optical fiber. The compensating multimode optical fiber can be configured to be bend insensitive.
First claim
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What is claimed is: 1. A method of compensating a primary multimode optical fiber having a chromatic dispersion D, an alpha parameter α 40 , and a length L 1 for chromatic modal dispersion that arises from using the primary multimode optical fiber with a VCSEL light source having transverse modes of different wavelengths, the method comprising: measuring a center-wavelength difference Δλ max-c for the VCSEL light source, wherein Δλ max-c ≦1 nm; calculating a maximum delay diff…
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Physics · mapped topic
- G02B6/268Primary
Physics · mapped topic
Physics · mapped topic
Physics · mapped topic
Physics · mapped topic
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- What does patent US8977091B2 cover?
- Multimode optical fiber systems with adjustable chromatic modal dispersion compensation are disclosed, wherein the system includes a VCSEL light source and primary and secondary optically coupled multimode optical fibers. Because the VCSEL light source has a wavelength spectrum that radially varies, its use with the primary multimode optical fiber creates chromatic modal dispersion that reduces…
- Who is the assignee on this patent?
- Chen Xin, Li Ming-Jun, Powers Dale Robert, and 2 more
- What technology area does this patent fall under?
- Primary CPC classification G02B6/268. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Mar 10 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).