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A multiple star WDM-PON using a band splitting WDM filter

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Abstract

We propose a multiple star wavelength division multiplexing-passive optical network (WDM-PON) to serve several subscriber groups located at a widely distributed area. The architecture based on a band splitting WDM (BSWDM) filter separates upstream and downstream bands to several sub-bands and assign them to different subscriber groups. As a result, it enables to use a single type AWG for second stage splitting points. Thus, it provides color-free outside plant and simplifies management issues. The proposed architecture also provides pay as you grow feature.

©2008 Optical Society of America

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Figures (8)

Fig. 1.
Fig. 1. Simplified multiple star WDM-PON architecture employing BSWDM filters.
Fig. 2.
Fig. 2. Graphical representation and passband characteristics of the proposed BSWDM filter.
Fig. 3.
Fig. 3. Wavelength assignment of the BSWDM filter.
Fig. 4.
Fig. 4. Measured transmission spectra of fabricated 1×4 BSWDM filter in (a) E-band (downstream), (b) C-band (upstream).
Fig. 5.
Fig. 5. Experimental set up for multiple star WDM-PON based on the BSWDM filter (upstream).
Fig. 6.
Fig. 6. (a) Measured BER result of 12 WDM channel, (b) locked spectra of upstream data.
Fig. 7.
Fig. 7. Measured BER according to the detuning when the data rate is 1.25 Gb/s.
Fig. 8.
Fig. 8. The multiple star WDM-PON architecture based on a conventional CWDM filter.

Tables (1)

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Table 1. Defined parameters

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