Proximion WISTOM optical layer monitoring series

The Proximion WISTOM optical layer monitoring series provides non-intrusive, real-time monitoring of power, wavelength and OSNR for DWDM channels in up to 16 fibres simultaneously.

WISTOM is a high-performance optical layer monitor, combining the features of an optical spectrum analyser and a fast optical channel monitor, aimed at long-haul and metropolitan DWDM network supervision. It scans a full spectrum in 40 µm. The integrated optical switch provides monitoring of up to 2048 channels in 16 fibres. It contains powerful embedded software that performs intelligent analysis of the measured data. It monitors any DWDM system, regardless of system vendor, channel spacing, modulation technology, and data format or bit rate. It provides OPM functionality with 100, 40, 10 and 2.5 Gbps in the same link.

The WISTOM In-Fiber Intelligence combines optical chan­nel monitoring (OCM) and optical performance monitoring (OPM), creating a real-time optical layer monitoring (OLM) capability. This enables proactive optical signal surveillance in the all-optical domain. Due to WISTOM‘s high optical resolution, dense DWDM channel spacing can be managed over the full spectrum. Improved tuning and detection schemes, involving precision scanning techniques, ensure high measurement accuracy. WISTOM monitors the spectral characteristics over the C-band.

Any channel deviating from normal conditions is reported within milliseconds. Spectral characteristics, such as central wavelength and OSNR of each channel, are monitored and reported. The long-term drift of these parameters can be tracked and analysed, thus providing input for network tuning and resource allocations. WISTOM gives service providers the opportunity to resolve channel-specific problems, in some cases even before a degrading channel suffers critical data loss. This translates into less network downtime and the ability to avoid violation of service level agreements (SLAs). The measurement performance of WISTOM also enables diversified billing models and intricate SLA supervision.

Features include non-intrusive, in-fibre signal monitoring; fast scan of entire DWDM spectrum in real time; good power and wavelength accuracy; an integrated optical switch for multifibre monitoring; full-featured API for effective application integration; SNMP for effective network management integration; an adaptable, modular SW platform; robust assembly with no moving parts; and numerous customisation alternatives for high interoperability.

Applications include optical layer monitoring for the entire network; key values and customised reports; long-term trend analysis; effective fault localisation; and proactive instead of reactive fault management.