Page 1 Corning® ER Specialty Optical Fibers Erbium-Doped Fibers Manufactured with Corning’s patented Outside Vapor Deposition (OVD) process, Corning® ER Specialty Fibers set the world standard for uniformity and reliability. Corning offers Erbium-doped fibers with or without hermetic coating. The hermetic coating offers significant advantage with respect to mechanical reliability and resistance to hydrogen induced optical attenuation degradation. These Erbium-doped fibers have a proven track record in state-ofthe- art optical amplifiers, and exhibit consistently low splice loss when coupled with fibers such as Corning® HI 1060 FLEX, Corning® HI 980 and Corning® SMF-28e+® Optical Fiber. Erbium-doped fibers designs are available for conventional Cband, L-band and Reduced Clad (80 ìm) applications. Applications: „h Single and multi-wavelength optical amplifiers (EDFA) „h Digital and analog systems „h CATV amplifiers Features: „h Outstanding consistency and uniformity using Corning’s patented Outside Vapor Deposition (OVD) process „h OVD manufacturing consistency provides repeatability for gain spectrum allowing for the reduction of lot qualifications in amplifier deployment „h Hermetic coating for increased environmental stability and reliability „h Dual acrylate coating system provides excellent protection from microbend-induced attenuation and superior mechanical robustness „h Short and long cutoff wavelength C-band versions available „h Excellent geometry control „h Mode-field diameter designed to match Corning® High Index Specialty Fiber, allowing for efficient coupling with an EDFA M0200012 Issued: March 2010 Supersedes: January 2008 For use in Optical Amplifiers and Fiber Lasers

Page 2 ER 1550C3 ER 1550C3 LC RC ER 1550C3 Key Optical Specifications for C-band Fibers Peak Absorption Range @ 1530 nm (dB/m) 5.0 to 10.0 5.0 to 10.0 5.0 to 10.0 Peak Absorption Range @ 980 nm (dB/m) „d 2.5 „d 3.0 „d 2.5 Variation Around Peak Absorption per Batch (%) ± 1 ± 1 ± 1 Maximum Attenuation @ 1200 nm (dB/km) 15.0 15.0 15.0 Cutoff Wavelength (nm) 1300 980 1300 Mode-field Diameter @ 1000 nm (ìm) 3.5 ± 0.2 3.6 ± 0.2 3.5 ± 0.2 Mode-field Diameter @ 1550 nm (ìm) 5.4 ± 0.4 5.6 ± 0.4 5.4 ± 0.4 Polarization Mode Dispersion (fs/m) 4 4 4 Key Geometric, Mechanical and Environmental Specifications...

Page 3 ER 1600L3 RC ER 1600L3 Key Optical Specifications for L-band Fibers Peak Absorption Range @ 1530 nm (dB/m) 18.0 to 29.0 Variation Around Peak Absorption per Batch (%) ± 1 Maximum Attenuation @ 1200 nm (dB/km) 15.0 Cutoff Wavelength (nm) 1400 Mode-field Diameter @ 1550 nm (ìm) 5.5 ± 0.3 Polarization Mode Dispersion (fs/m) 5 Key Geometric, Mechanical and Environmental Specifications Cladding Outside Diameter (ìm) 125 ± 1 80 ± 1 Coating Outside Diameter (ìm) 245 ± 10 165 ± 10 Core-to-Cladding Offset (ìm) 0.4 Proof Test (kpsi) 100 Standard Lengths 100 m, 500 m, 1 km, 2 km, 5 km Operating Temperature...

Page 4 Corning’s Outside Vapor Deposition Process Corning’s patented Outside Vapor Deposition (OVD) manufacturing process creates the most consistent fiber in the world. Producing 100 percent synthetic glass, the OVD process greatly reduces, if not eliminates, impurities that can affect fiber performance. It also provides greater degree of control and flexibility in fiber design. Corning is now using seventh generation outside vapor deposition technology, the most advanced in the world today. Importance of Erbium-doped Fiber Uniformity Perhaps the most critical parameter for Erbium-doped fiber...