High-gain fiber for Raman amplifier applications has been launched by Fiberlogix Ltd. UK. It offers a broad bandwidth and tight mode field diameter. The company says the proprietary core composition and co-doping processes produce low-insertion and low-dispersion specifications. Polarization-maintaining, photosensitive, high-NA and reduced-cladding fibers are available. Their optical and geometrical uniformity enable splicing with standard single-mode telecommunications fiber.