While networks are individually protected by the family of spanning tree protocols, Riverstone Networks' Loop Protection System safeguards carrier networks from customer premise generated failures.

It can detect network traffic loops created at the customer's site, isolate the connections, then inspect packets entering the carrier network to see if they have already been sent to the corporate network. If so, it isolates the interface, then periodically reconnects to detect if the loop has been removed.

ILX Lightwave's high-power 42W LDC-3926339 Laser Diode Current Source module for development and production testing of higher-power pump lasers can be used with the new LDC-3926 16-channel High Power Laser Diode Controller and drive up to 6A of current at a voltage of 7V. The module has higher power output, constant current or constant power control, external modulation and four-wire forward voltage measurement. Also, all of ILX Lightwave's standard laser diode protection features are included, including adjustable compliance voltage and hardware current limits.

The LDC-3926 16-channel High Power Laser Diode Controller also accepts all of the existing laser control modules from the LDC-3916 Laser Diode Controller. It has an intuitive front panel interface, fast GPIB/IEEE488.2 communications, extensive command set for fast. thorough testing, high compliance voltage, and independent isolated channels.

Acterna's DA-3600 Data Network Analyzer, which operates on Ethernet and Packet-over-SONET/SDH at up to 2.5Gbit/s, has new functions to intercept and forward packet streams based on user-defined parameters.

For law enforcement, defence and security it can analyse 160k IP flows and deliver flexible filtering capabilities by IP addresses and keywords, allowing monitoring and interception.

For lawful intercept it searches and filters traffic for keywords associated with a security threat, then monitors those users and forwards their traffic to a collection device for forensic analysis.

For intrusion detection, it serves as an effective front-end tool to filter traffic, which can then be forwarded to an Intrusion Detection System.

Tsunami's MetroChannel 16-Channel CWDM passive multiplex and demulti-plex modules are highly integrated and measure just 4.4x3.2x0.4in for use in metro and access networks.

The modules have an extremely low insertion loss of 2.25dB with high channel isolation, and are qualified per applicable Telcordia standards. Designed to work with uncooled lasers with wavelengths 20nm apart, performance is independent of protocol and data rate.

Kingfisher International's KI7300/KI7700 series two-way lost test set, with optional optical return loss, displays the average multi-wavelength link loss in real-time on both instruments, simplifying cable certification and rectification and minimising training and operational procedures.

The handheld instrument, with 1200 memory space for dual-wavelength tests, can save testing time for high fibre counts. Basic measurements are simpler to make than with a source or meter.

The ORL zero function and user calibration mode compensate for residual reflections and stray losses in test set-up respectively, extending measurement range with improved linearity and improving overall accuracy.

Autotest is available on both Test and Meter ports.

Agilent's enhanced OmniBER XM network simulator platform has added support for SONET/SDH simultaneous multi-channel, multi-port APS service disruption measurement and automatic connectivity checking, allowing complete verification of APS performance in just hours.

To stress next-gen SONET/SDH gear, the XM can simultaneously generate real-life network signals — incorporating mixed payloads, errors and alarms — on up to 192 channels in each single OC-192/STM-64 port, increasing the effectiveness of system verification test.

Koncent Communication's Multi-Mode Fiber Collimators include single-fibre, dual fibre and mini-sizes.

These epoxy-free in-optical-path collimators have low insertion loss and high return loss.

Ideal for applications of CWDM and switches for access networks, broadband applications, and Cable TV networks.

Jennic has a new SPI-3 Interface IP core for incorporation into ASSPs or as a ASIC/FPGA intellectual property library component.

The SPI-3 Interface IP core can be programmed to operate as either a PHY device or a Link Layer device to address bridging applications.

Jennic's solution can support an external interface clock rate up to 200MHz, when implemented in a 0.13µm ASIC process, giving a theoretical maximum bandwidth of 6.3Gbit/s. It also has a fully integrated, channelised packet FIFO.

Available as a soft IP core for 0.18 and 0.13µm CMOS and FPGAs.

New Focus has improved resonant modulator designs at new frequencies.

Those from 190MHz to 2.0GHz use new resonant tank circuit designs and are slightly tunable around the resonant frequency.

Those from 4.6GHz to 9.2GHz use an improved microwave cavity design.

Suitable for applications in laser-frequency stabilisation.

Tellabs' 5500 NGX next-gen cross-connect merges the integrated optical and data bandwidth management of the 6400 transport switch with the 5500 digital cross-connect system to simplify networks and cut costs.

Support of dense, high-speed optical transport and management of any traffic types, including wideband, broadband and data, enables migratation of existing investment to a highly integrated, well-managed next-gen network.

Alcatel Optronics' 1926 SDH Rx 2R (Re-amplification/Re-shaping) receiver is dedicated to metro and long-haul DWDM, and compliant with STM-16/OC-48 transmitter and receiver multi-source agreements.

It provides high flexibility to optical channel and amplifier number, showing high sensitivity even in an optically noisy line and allowing decision threshold adjustment to correctly interpret 0s and 1s. It operates from 100Mbit/s to 2.7Gbit/s. High optical sensitivity allows operation over distances up to 320km. To manage its multi-rate capability, it doesn't use any clock recovery.

The 1926 has a III-V APD detector integrated with a pre-amplifier ASIC. Dynamic range of 30dB copes with an optical level variation factor of 1000. Within a standardised 24-pin package of 58.7x35.7x8.9mm3, it provides the same electrical interface with a single power supply for all targeted applications. Low power consumption (1W typically) reduces system operating costs.

DiCon Fiberoptics' MEMS 1x4 Switch offers low insertion loss, low power consumption, consistent repeatability, and C and L band operation.

The switch is a non-latching device which acts as a shutter when the electrical power is removed.

It also reduces the cost of channel or band monitoring within DWDM networks by connecting multiple fibres sequentially to the same test modules. Housed in a laser-style 14-pin DIP package.

Panduit's 72-port, 2 Rack Unit Angled Patch Panel (CPPLA72WBL) for high-density applications has 100% modularity, making it suitable for both copper and fibre.

A bend in the centre at an optimal angle allows cables to flow to each side of the rack directly into Vertical Cable Managers, eliminating horizontal cable managers and helping cables maintain bend radius control. It also allows the labelling scheme and port identification to be visible at all times. Front-removable snap-in faceplates enable easy front access to modules.

Advanced Optical MEMS Inc's 8x8 Optical Broadcast Switch is aimed at applications that require information from a source being distributed to multiple destinations such as SANs, video on demand and distributed data processing.

It offers low-cost, high repeatability, low insertion loss and low power consumption and can be configured as a broadcast switch, cross-connect or protection switch. In multi-cast or broadcast mode, any input channel can be routed to any combination of output channels with a switching time of <15ms. It will enable new revenue-generating services such as lambda sharing and optical VPNs.

The switch can also be built with multi-mode fibre.

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