Economically important applications for semiconductor photonic devices include optical data recording, fiber optic telecommunications, laser printing (based on xerography), displays, and optical pumping of high - power lasers.
78 In particular, in a case such as that before the referring court, it is
important that the competent authorities of the host Member State are able, when examining the
application of a Union citizen who is not
economically active and is in Mr Brey's position, to take into account, inter alia, the following: the amount and the regularity of the income which he receives; the fact that those factors have led those authorities to issue him with a certificate of residence; and the period during which the benefit applied for is likely to be granted to him.