Method and system is disclosed for delivering targeted advertisements to a user by employing an interactive television system. The method includes receiving a request to initiate communication and identifying a request type based on the received request. The reconfigurable wavelength routers described allow any of a plurality of wavelengths on any line to be switched to any output line by programming the filters accordingly. 5 or less at least at the portion when load is applied to the shaft. The fibrous element divides the lumen into a proximal lumen portion and a distal lumen portion when so disposed.