发明名称 |
OPTICAL FIBER GRATINGS HAVING INTERNAL GAP CLADDING FOR REDUCED SHORT WAVELENGTH CLADDING MODE LOSS |
摘要 |
The present invention is predicated on applicants' discovery that an appropriately spaced and dimensioned internal gap cladding can substantially reduce short wavelength cladding mode loss in a fiber Bragg grating. A fiber Bragg grating is provided with a ring of closely spaced, longitudinally extending gap regions in the glass peripherally surrounding the core. The gaps are spaced apart by thin glass webs having a thickness less than a wavelength of the light being transmitted and are disposed peripherally abou t the core at a distance of 2-10 wavelengths from the core center. The thin webs limit the passage of the light between the gaps. The combination of webs and gaps acts as an internal thin cladding which supports fewer cladding modes than conventional glass cladding and, significantly, provides increased wavelength spacing between the Bragg resonance and the first cladding made resonance.
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申请公布号 |
CA2331914(A1) |
申请公布日期 |
2001.09.03 |
申请号 |
CA20012331914 |
申请日期 |
2001.01.23 |
申请人 |
LUCENT TECHNOLOGIES, INC. |
发明人 |
STRASSER, THOMAS ANDREW;WESTBROOK, PAUL STEPHEN;BURDGE, GEOFFREY L.;WINDELER, ROBERT SCOTT;EGGLETON, BENJAMIN JOHN |
分类号 |
G02B5/18;C03B37/012;G02B6/00;G02B6/02;G02B6/34;(IPC1-7):G02B5/18;H04B10/18;G02B5/26 |
主分类号 |
G02B5/18 |
代理机构 |
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主权项 |
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地址 |
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