Abstract
We compare optical time domain reflectometry (OTDR) techniques based on conventional single impulse, coding and linear frequency chirps concerning their signal to noise ratio (SNR) enhancements by measurements in a passive optical network (PON) with a maximum one-way attenuation of 36.6 dB. A total of six subscribers, each represented by a unique mirror pair with narrow reflection bandwidths, are installed within a distance of 14 m. The spatial resolution of the OTDR set-up is 3.0 m.
Highlights
The need for a reliable operation of passive optical networks (PONs) for fiber to the home (FTTH)access is driven by the continuously growing demand for bandwidth of internet and other services [1,2].The next-generation optical access (NGOA) networks offer a potential for providing high bandwidth access to both residential and business customers, while reducing network power consumption and operational expenditures (OPEX) of the network operator [3,4,5,6]
The PON monitoring concept based on combinations of cascaded wavelength-selective mirrors is intended to enable a unique subscriber identification
The mirrors feature a high reflectivity to enable monitoring in PONs with high attenuations and/or high splitting ratios
Summary
The need for a reliable operation of passive optical networks (PONs) for fiber to the home (FTTH). To enable monitoring of high subscriber counts, a narrow reflection bandwidth
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