Abstract: Methods and systems for generating device-optimized advertisement content from source data. The methods and system includes computing hardware which is operable to execute one or more software products for providing a graphical user interface and an advertisement building arrangement for enabling user-manipulation of the source data from one or more layered pre-defined formats to generate intermediate content. In addition, the method and system includes a translation arrangement for translating the intermediate content to the device-optimized content that takes into account rendering characteristics of one or more wireless-enabled portable rendering devices on which the device-optimized advertisement content is to be rendered.

Abstract: Methods and systems for generating device-optimized content from source data. The method and system include computing hardware which is operable to execute one or more software products for providing a graphical user interface for enabling user-manipulation of the source data to generate intermediate content. In addition, the method and system include a translation arrangement for translating the intermediate content to the device-optimized content. The translation arrangement takes into account rendering characteristics of one or more wireless-enabled portable rendering devices on which the device-optimized content is to be rendered.

Abstract: An optical amplifier comprises an optical fibre, a pump laser for optically pumping the optical fibre to amplify an optical signal, a TEC 1 for cooling the pump laser on receipt of a cooling current, a temperature sensor 2 for monitoring the temperature of the amplifier housing; and a control circuit 3 for controlling the cooling current in dependence on a sensing output from the temperature sensor 2, so as to maintain the temperature of the pump laser at a temperature set point. The control circuit 3 is configured (i) to maintain the temperature of the pump laser at a first temperature set point within a predetermined temperature range of the amplifier, and (ii) to maintain the temperature of the pump laser at a second temperature set point, higher than the first temperature set point, when the sensing output from the temperature sensor 2 exceeds a threshold value.

Abstract: A multistage optical amplifier is controlled to compensate for the effect of amplified spontaneous emission (ASE) by a method comprising the following steps. Optical input and output signals to a first gain stage are detected, and the drive current to the first gain stage is controlled in dependence on the optical input signal to the first gain stage. Optical input and output signals to a last gain stage are detected, and the drive current to the last gain stage is controlled to maintain the output power of the last gain stage substantially constant. The effect of ASE in the first gain stage is compensated for by applying a correction factor based on the ASE of the first gain stage and the output power of the first gain stage.