| 摘要 |
<p>An optical waveguide, such as an optical fiber, including a core having a refractive index nco and a radius rco; an inner cladding laterally surrounding the5 core, the inner cladding having a refractive index nic and an outer radius of ric; an outer cladding laterally surrounding the inner cladding, the outer cladding having a refractive index noc; and a narrow depressed well, wherein nco> noc> > nic. The range of the ratio of the inner, depressed-well clad radius, ric, to core radius, rco, varies from 2.4 to 3.0. The waveguide has a +Δ of 0.0014 to 0.0021, a -Δ of -10 0.0021 to--0.0034, and a Δtot of 0.0043 to 0.0049.</p> |
