The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
With low chirp direct modulation of a commercially available lambda =1.55 mu m BH DFB laser module at 10 Gbit/s, a transmission experiment over 69 km of non-dispersion-shifted singlemode fibre was successfully performed. The scheme is based on optical FM by modulation of the injection current with subsequent conversion into intensity modulation by means of a fibre Mach-Zehnder interferometer.<<ETX>>
The recently developed group theory of geometrically uniform trellis-coded modulation (TCM) is applied to the case of multidimensional PSK signal constellations. A general algorithm to construct geometrically uniform partitions of signal constellations is described and applied to multidimensional PSK signals. Examples of application to TCM employing 3*8 PSK signalling are presented.<<ETX>>
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.