Disclosed is a buffer tube that possesses a higher buffer-tube filling coefficient. Optical fibers enclosed within the buffer tube demonstrate improved attenuation performance when subjected to temperature variations between about −40° C. and 70° C. The buffer tube is suitable for deployments requiring...http://www.google.es/patents/US7970247?utm_source=gb-gplus-sharePatente US7970247 - Buffer tubes for mid-span storage