| 摘要 |
<p>Disclosed is a plastic-clad optical fiber comprising a quartz core and a polymer clad as tightly formed around the core, in which the clad has a multi-layered structure of a plurality of different polymers, and the refractive index of the core (nCO), that of the first clad as tightly formed around the core (nCL1) and that of the second clad as tightly formed over the first clad (nCL2) satisfy both 0.21 ≤ 2ROOT (nCO <2>-nCL1 <2>) ≤ 0.35 and nCL2 < nCL1. This is a wide-band PCF with no disadvantages (loss in connection with crimp-style connectors, bending loss, and transmission loss in temperature change). Therefore, this is favorably used as a light information-transmitting material in constructing ATM-LAN, high-speed Ethernet, etc.</p> |
