Abstract :
A novel space and wavelength tunable filter based around a diffraction grating is described which uses a compact, low cost electromagnetic tuning mechanism and operates from +or-5 V supplies. Prototype components show <3 dB optical loss, <1.6 dB polarisation sensitivity, channel bandwidth of >2.5 nm and adjacent channel isolation >30 dB. Channel selection is achieved in <4 ms.
Keywords :
diffraction gratings; frequency division multiplexing; optical communication equipment; optical filters; optical losses; optical switches; spatial filters; switching networks; 3 dB; MONET; SAWTR; WDM-based optical switching networks; adjacent channel isolation; channel bandwidth; channel selection; diffraction grating; electromagnetic tuning mechanism; grating angle sensing; optical loss; polarisation sensitivity; space and wavelength tunable filter;
