Telecommunications
Smart phones are just one of the consumer products driving the demand on the telecommunications infrastructure. Each new generation of smart phones comes with more social networking applications, more sophisticated business functions, better video, and a faster wireless interface. Networking providers are responding by scaling their networks from 10 Gb/s transmission to 40 Gb/s and 100 Gb/s. Kotura supplies the optical components required by Agile networks, allowing them to implement more complex modulation techniques that support 100 Gb/s on a single wavelength.
A popular 100 Gb/s modulation scheme, standardized by the Optical Networking Forum (OIF), is dual polarization quadrature phase shift keying (DP-QPSK). Kotura components provide small integrated solutions for the transmitter and the coherent receiver.
Other Agile functions like wavelength tracking are implemented by Kotura’s Ultra-Variable Optical Attenuators. Because the response time in silicon photonics is many times faster than competing solutions, the Ultra-VOAs can be used for signaling and transient suppression. These devices improve the performance of coherent receivers.
Reconfigurable Add/Drop Multiplexers (ROAMs) use Kotura’s Ultra-VOA arrays to ensure that 40 or 80 wavelengths on a fiber are all properly balanced. The client side of telecommunication networks is configured much like a data center and use Kotura products defined for that application.