STAVDAS, A; MIDWINTER, JE; BAYVEL, P; TODD, C; (1995) DESIGN OF A HOLOGRAPHIC CONCAVE GRATING USED AS A MULTIPLEXER DEMULTIPLEXER IN DENSE WAVELENGTH-ROUTED OPTICAL NETWORKS WITH SUBNANOMETER CHANNEL SPACING. J MOD OPTIC , 42 (9) 1863 - 1874.
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The performance parameters of a free-space concave grating multiplexer/demultiplexer have been evaluated for applications in wavelength routed optical networks. The conditions for the stationarity of astigmatism with wavelength were rigorously derived and a novel design method was adopted to minimize the optical aberrations. The performance of this system is close to diffraction-limited over the wavelength ranges 1480-1520 nm or 1530-1570 nm. The optical isolation is better than - 30dB for a channel spacing of 0 . 5 nm and the losses due to aberrations are estimated to be less than 4 dB. The results can be used to design a spectrograph suitable for wavelength cross-connection in all-optical networks.
|Title:||DESIGN OF A HOLOGRAPHIC CONCAVE GRATING USED AS A MULTIPLEXER DEMULTIPLEXER IN DENSE WAVELENGTH-ROUTED OPTICAL NETWORKS WITH SUBNANOMETER CHANNEL SPACING|
|UCL classification:||UCL > School of BEAMS > Faculty of Engineering Science > Electronic and Electrical Engineering|
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