An overview of different approaches is given for overlaying a power-splitting PON in one wavelength band with a WDM comb in another wavelength band. Three versions of such a device for different broadcast wavelengths have been realized in silica technology. Eight channels of a WDM band around 1.55 µm wavelength with 200 GHz spacing are overlaid on a 1 to 8 power split broadcast signal at either 1.31 µm or 1.50 µm wavelength. Key component is a 2-band MUX device that relies on a specially designed arrayed waveguide grating (AWG) integrated with a 1 to 8 power splitter ahead.
© 1999 Optical Society of AmericaPDF Article
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