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NON-ZERO DISPERSION SHIFTED OPTICAL FIBER HAVING A SHORT CUTOFF WAVELENGTH
NON-ZERO DISPERSION SHIFTED OPTICAL FIBER HAVING A SHORT CUTOFF WAVELENGTH
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机译：具有零截止波长的非零色散位移光纤
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摘要
A non-zero dispersion shifted optical fiber (NZDSF) includes a central core, an inner cladding, and an outer cladding. The central core has an outer radius r1 and a maximum refractive index difference Dn1 with respect to the outer cladding. The inner cladding includes a first intermediate cladding, a buried trench and a second intermediate cladding. The first intermediate cladding has an outer radius r2 and a refractive index difference Dn2 with respect to the outer cladding. The buried trench has an outer radius r3, a width w3, and a negative refractive index difference Dn3 with respect to the outer cladding. The second intermediate cladding is positioned between said buried trench and said outer cladding, has an outer radius r4 and a refractive index difference Dn4 with respect to said outer cladding.;For a radius of curvature of 30 millimeters at a wavelength of 1625 nanometers, the optical fiber typically exhibits bending losses of about 0.5 dB/100 turns or less. The optical fiber's 22-meter cable cutoff wavelength (22m-λcc) and effective cutoff wavelength at two meters are typically less than 1150 nanometers.
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