Patent ID: 6904217
Filing Date: 2005-06-07
Classification: C03B,G02B,Y02P

Abstract:
1. An optical fiber comprising sequential regions of: a. a core region extending from the center of the optical fiber, with essentially all of the core region having a positive Δ, b. a trench region, with essentially all of the trench region having a negative Δ, c. a ring region having a positive Δ, the optical fiber characterized by: Dispersion at 1550 nm: 5-8.5 ps/nm-km Dispersion slope at 1550 nm: <0.045 ps/nm Effective area at 1550 nm: >50 μm Cable cutoff wavelength: <1410 nm Macrobend loss (32 mm) at 1625 nm: >5×10 Zero dispersion wavelength: <1400 nm.