发明名称 |
LARGE-MODE-AREA OPTICAL FIBER |
摘要 |
A large-mode-area (LMA) optical fiber (10) that operates as a single-mode optical fiber. The optical fiber includes a core region (20) surrounded by an inner cladding (32), which in turn is surrounded by an outer cladding (40). The inner cladding includes at least one up-doped ring region (32R1). The ring region is configured to form a large attenuation differential between the higher-order modes and the fundamental mode so only that the fundamental mode remains traveling in the optical fiber. If necessary, the optical fiber can include a bend (10B) having a select “resonant” bend diameter (DB) that increases the relative attenuation of the fundamental and higher-order modes. The optical fiber supports an effective mode field diameter (MFD) of up to 40 μm to 50 μm. As a result, detrimental non-linear effects are suppressed, which allows the optical fiber to carry substantially more optical power than conventional LMA optical fibers. The LMA optical fiber is thus eminently suited for a number of optical-fiber-based applications calling for high optical power, such as fiber lasers and pump sources for wavelength conversion. |
申请公布号 |
EP2179312(A1) |
申请公布日期 |
2010.04.28 |
申请号 |
EP20080780216 |
申请日期 |
2008.07.16 |
申请人 |
CORNING INCORPORATED |
发明人 |
CHEN, XIN;KOH, JOOHYUN;LI, MING-JUN;LIU, ANPING;WANG, JI;ZENTENO, LUIS, A. |
分类号 |
G02B6/14;G02B6/036;H01S3/067 |
主分类号 |
G02B6/14 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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