Coriant was incorporated as an independent company in 2013 as a spin-out from Siemens Optical Networks (NSN ON). The launch of the company was announced for the OFC/NFOEC in March 2013 and on May 6, 2013 Coriant became independent from

Nokia Siemens Networks Nokia Networks (formerly Nokia Solutions and Networks (NSN) and Nokia Siemens Networks (NSN)) is a multinational data networking and telecommunications equipment company headquartered in Espoo, Finland, and wholly owned subsidiary of Nokia Corp ...

under the ownership of Marlin Equity Partners. Coriant merged with Sycamore Networks (acquired by Marlin Equity in January 2013 and headquartered in

Chelmsford, Massachusetts Chelmsford () is a town in Massachusetts that was established in 1655. It is located northwest of Boston. The Chelmsford militia played a role in the American Revolution at the Battle of Lexington and Concord and the Battle of Bunker Hill. ...

), which continued operating as Coriant America Inc. Marlin Equity merged Coriant and Tellabs (acquired by Marlin Equity in December 2013

Naperville, Illinois Naperville ( ) is a city in DuPage County, Illinois, DuPage and Will County, Illinois, Will counties in the U.S. state of Illinois. It is in the Chicago metro area, west of the city. Naperville was founded in 1831 by Joseph Naper. The city was ...

), which continued as Coriant. Later, the telco and GPON related components of the company were spun back out as a new company, also called Tellabs. Coriant was acquired by

Infinera Infinera Corporation is a San Jose, California-based vertically integrated manufacturer of Wavelength division multiplexing (WDM)-based packet optical transmission equipment and IP transport technologies for the telecommunications service provide ...

in 2018.

History

Coriant originates from the Transmission Technology department of Siemens based in Munich, Germany, (Übertragungstechnik - ÜT as it was called in the 1990s). In those days the technology evolved from

Plesiochronous Digital Hierarchy The plesiochronous digital hierarchy (PDH) is a technology used in telecommunications networks to transport large quantities of data over digital transport equipment such as fibre optic and microwave radio systems. The term '' plesiochronous'' i ...

(PDH) to Synchronous Digital Hierarchy (SDH) in the

STM-4 The STM-4 (Synchronous Transport Module) is a SDH ITU-T fiber optic network transmission standard. It has a bit rate of 622.080 Mbit/s. The STM-4 specification is designed to carry 7,680 8-bit "voice" frames every 125 micro-seconds for a total pa ...

STM-16 Synchronous optical networking (SONET) and synchronous digital hierarchy (SDH) are standardized protocols that transfer multiple digital bit streams synchronously over optical fiber using lasers or highly coherent light from light-emitting diodes ...

(2.5 Gbit/s) level. In the late 1990s and early 2000s

DWDM In fiber-optic communications, wavelength-division multiplexing (WDM) is a technology which multiplexes a number of optical carrier signals onto a single optical fiber by using different wavelengths (i.e., colors) of laser light. This techni ...

emerged to allow for even higher transmission capacity (in the

terabit per second In telecommunications, data-transfer rate is the average number of bits ( bitrate), characters or symbols ( baudrate), or data blocks per unit time passing through a communication link in a data-transmission system. Common data rate units are mu ...

region). This technology is also named optical transport network (OTN), where a set of multiplex and encapsulation hierarchies is standardized.

References

External links

* {{Official website, https://www.coriant.com Networking hardware companies Telecommunications equipment vendors Telecommunications companies established in 2013 Manufacturing companies established in 2013 Manufacturing companies based in Munich Manufacturing companies based in Illinois Companies based in Naperville, Illinois