Abstract: A system and method are provided to support a scenario where a cluster of HTTP—Hypertext Transfer Protocol—servers has to accept and maintain permanently open HTTP connections with a large number of client devices. The proposed system relies on HTTP/2 and Server-sent Events—SSE—in order to keep connections open and to allow bidirectional message exchange between client and server. It is comprised by following computational entities: at least one connection redirector entity, at least two connection handler entities, a location registry entity and an execution server entity configured to support an API implementation adapted to provide an interface for external systems. The connection between the system and the client device is performed through an internet connection.

Abstract: The present invention provides a photonic integrated circuit, system, apparatus and method which can be used as an optical transmitter in a system, for example in a telecommunication system. According to the various embodiments of the invention, the circuit includes several optical devices, wherein some are passive and others have gain, which constructed and connected with the specific characteristics, leads to a multi-wavelength transmitter with tunable operation band.