EoW July 2013

News Corporate

New single-mode fibre for 12,000km

Keeping rolling. . . company founder FG Theis started production of flat wire and profiles more than 100 years ago. Now the company rolls in thicknesses of 0.15-5mm and in widths ranging from 1mm to 50mm in all grades and qualities. The company’s highly precise and varied flat wires include narrow steel strips and complete profiles. These have stringent tolerances, seamless edge shapes, linear straightness and absolute flatness. These properties are achieved though sophisticated calibration coordination and precise shaping inmulti-roller profile rolling plants. all types of edges can be provided, including natural edges, cut, rolled or chased edges. special edges can also be manufactured to meet customers’technical drawings. complete profiles are manufactured on different tandem rolling mills for profiles, using round wire or pre-split steel strip. The company’s own tool making plays a large part here, guaranteeing precise profile shaping with the narrowest of radii and angles. Friedr. GustavTheis Kaltwalzwerke GmbH – Germany Website : www.theis.de

DesIGNer and manufacturer of fibre optic network products, OFs, has introduced TeraWave™ ULa ocean fibre, a new single-mode fibre designed for 100Gbs coherent transport in submarine systems for distances up to 12,000km. TeraWave ULa fibre is designed to provide a unique combination of the industry’s largest effective area, excellent cabling performance and significantly reduced attenuation for reliable coherent transmission at 100Gbs over trans-oceanic distances. Used in shorter length applications, the fibre is said to provide even better non-linearity performance for increased spectral efficiency. OFs manufactures TeraWave ULa fibre using proprietary processes to produce fibre with low water peak (LWP) performance and ultra-low polarisation mode dispersion (PMD). The new fibre is optimised for ultra-long haul networks that use advanced modulation formats and coherent detection, such as transoceanic networks where extreme distances between shore end terminals limit the per-channel launch power in dense wavelength division multiplexing (DWDM) transmission. compared to earlier generations of submarine fibres, TeraWave ULa fibre reduces the performance limitations introduced by fibre non-linearities, thereby supporting higher spectral efficiency and lower repeater spacing. applications without repeaters, such as coastal festoons and deep water crossings, can also take advantage of the large effective area of TeraWave sLa ocean fibre, which permits higher power handling capacity without additional distortion, meaning more channels at higher speeds over longer distances before amplification is required. OFS – USA Website : www.ofsoptics.com

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july 2013