Jan 1st, 2003

Frankfurt Laser Company has a new line of high-power lasers with wavelengths of 785, 860 and 923nm (DFB) and 1064 and 1083nm (DBR), available on a C-mount or in a TO-3 package.

The three-section DBR lasers have a ridge waveguide structure and holographically created integrated grating. Optical power is typically 100mW and line-width <5MHz. A tunable model can be tuned continuously over 0.4nm (100GHz) using integrated resistors.

The DFB lasers are AR-coated on the front facet and deliver optical power of 50–100mW with spectral width of <100MHz. The GaAsP/AlGaAs chip is mounted in a 9mm TO-type package.

Santec's TSL-210F laser is tunable from 1260 to 1630nm, a 370nm range in continuous tuning, and covers the O, E, S, C, L and U bands.

It delivers a peak power of 10mW with greater than 3mW guaranteed over the entire tuning range. The unit offers high stability in optical power and wavelength setting accuracy and comes with software for simple control via GPIB interface.

Quake Technologies is sampling its second-generation monolithic transceiver for Ethernet and Fibre Channel applications (for full production in Q3/2003), fabricated in SiGe BiCMOS.

The QT2021 is compliant with 10.3Gbit/s IEEE 802.3ae Ethernet and 10.57Gbit/s Fibre Channel standards as well as the XAUI, XENPAK, XPAK, X2 and XFP MSAs.

The transceiver provides a >65% eye margin over the IEEE and Fibre Channel requirements and consumes 1.5W less power than the first generation.

Built on monolithic indium phosphide, Agility Communications' 20mW 3205 CW widely tunable laser assembly (TLA) can rapidly tune to 200 C-band channels at 25GHz spacing.

It is claimed to be the first commercially viable, solid-state widely tunable laser in a multi-sourced footprint. Much smaller than Agility's existing 10mW product, it has a dense 40-pin connector.

The SG-DBR laser is monolithically integrated with an SOA, which can operate as a VOA to pre-emphasise output power for optimum system performance. The 3205 also incorporates a wavelength locker, beam blanking to eliminate spurious emissions during switching, and self-contained microprocessor control and monitoring of electronics.

NetTest's Network Emulator application on its InterWatch Performance & Verification System provides real IP/MPLS/GMPLS network emulation with the ability to integrate multi-stream data traffic generation and QoS measurement.

Combination with InterWatch's complete VoIP, UMTS and ATM testing solutions provides an integrated and economic test system that allows the enabling transport technology, MPLS and IP Routing to be tested along with VoIP's signaling and data planes.

Each emulated node has its own protocol stacks, ensuring realistic replication of real-world behaviours and enabling emulated network condition for the interoperability of two or more devices-under-test.

Agilent Technologies RouterTester tools help evaluate the ability of core network and metro/edge IP routers to deliver 99.999% performance reliability.

A library of pre-written automated test applications (free with any RouterTester product or with subscription to the RouterTester software enhancement service) evaluates non-stop forwarding, graceful restart, hitless restart, non-stop routing and MPLS fast re-route technologies. This library of test cases allows users to measure and compare routing redundancy alternatives and benchmark actual router performance under a wide variety of network and traffic conditions.

Also, six resiliency test cases developed for Agilent's Journal of Internet Test Methodologies are available at

Centellax Inc has launched two new broadband driver amplifier modules for OC-768 optical modulators.

  • The P44R3 is designed to drive 40Gbit/s electro-absorption modulators (EA or EML).
  • The P423R3 is designed to driver 40Gbit/s Mach-Zehnder lithium niobate modulators.

Centellax has been shipping its line of DC-65GHz GaAs travelling wave amplifier chips since January 2002. Centellax plans to offer packaged driver amplifiers in the next couple of years.

The P423R3 uses three chips to provide 27dB gain at 45GHz with a 7.5Vp-p output (+23dBm) with 3.4W power dissipation. The P44R3 uses two stages to attain 18dB gain to 45GHz and 3.5Vp-p output (+16dBm) with 1.2W power dissipation. Both add less than 0.5ps rms jitter and provide less than 10ps rise and fall times. The 3.5V module measures 25.3x26.7x9.2mm and the 7.5V module 36.9x32.4x12.7mm.

JDS Uniphase has announced several high-performance components, including a 6-port mux/demux coupler, a high-reliability fused fibre 980nm PM combiner, a 50GHz 4-channel WDM, a micro-optic 2x2 PM splitter, and an 8-channel AWG with very low chromatic dispersion.

Santec's LambdaTracker is an Optical Channel Monitor for wavelength monitoring in dense and coarse wavelength division multiplexing (CWDM).

The devices are based on Santec's small-form-factor power monitor (IPD-Series) and dielectric interference filter technologies. Santec uses its own filters for channel counts of 16 or less, and arrayed waveguide gratings.

It has 8-, 16-, 32- and 40-channel capabilities for 50, 100, 200GHz and CWDM frequency/wavelength spacings in the C, L and S bands. Other channel counts and spacings may be customised.

Dynamic range is 53dB, crosstalk is –35dB, and response time is less than 15ms for 40 channels, total. The package sizes measure 130x80x15mm for a 40-channel device and 100x80x15mm for an 8-channel device.

Exfo's FTB-9310 Channel Selector module for the FTB-400 field-testing platform is for commissioning and lighting channels in DWDM networks.

This allows selection and isolation — with insertion loss of 4dB — of any C-band ITU DWDM channel for bit-error-rate testing and protocol-layer analysis.

The FTB-9310 is typically used with the FTB-8000 SONET/SDH 2.5 or 10Gbit/s Tester for protocol-layer testing applications.

The Channel Selector and SONET/SDH Tester can also be combined with the FTB-5240B OSA.

Designed for system integration, Santec's OVA-650-T is a compact variable optical attenuator that has a tap photodiode integrated into its hermetically sealed package.

The OVA has the high resolution, low insertion loss, low PDL, signal monitoring capability and guarantee to withstand 200mW optical input power. Photodiodes may be integrated either before or after the attenuator, or on both sides for full performance monitoring.

An optical shutter is optional.

SHF Communication Technologies has demonstrated driver–modulator assembly for 44Gbit/s optical transmission performance, including an outstanding 44Gbit/s optical eye pattern using an improved amplifier and a Corning OTI modulator, to provide a 40Gbit/s driver plus x-cut LiNbO3 modulator assembly.

Corning OTI has reduced the required drive voltage for x-cut modulators, achieving a bandwidth exceeding 30GHz. SHF's new 806E single-ended driver amplifier has been matched with this modulator using a small amount of positive gain slope tuning, using an extremely small group delay ripple even in the low frequency regime <1GHz.

SHF806E and Corning OTI's X-Cut chirp-free modulator combine for generating optical 44Gbit/s data signals. Q-values of more than 12 on the Agilent 83484A communication analyser, jitter of less than 0.8ps RMS and an extinction ratio of more than 12dB have been achieved.

The STM-1 module for RAD's DXC multi-service access nodes maximises bandwidth by grooming traffic from a wide range of DXC modules directly to a single, standard STM-1 link.

The module creates an STM-1 terminal and a 1/0 cross connect into a single, compact device. The 1U chassis is claimed to be the smallest unit that combines STM-1 and 32 additional ports. A larger unit, only 3U high, supports the STM-1 module and 112 additional ports.

The DXC connects to the ADM on STM-n networks using a single STM-1 link. The device maximises data traffic over SDH because it grooms on a timeslot basis, enabling it to pack timeslots more efficiently in the VC-12 containers.

The module connects to any ADM tributary STM-1 port, SDH terminal STM-1 uplink port, or another DXC.

The 2-port module enables link protection where each port can have a different interface.

Tektronix has introduced the SPI-3 and SPI-4.2 software support package for its TLA family of logic analysers. This provides a system-level design and debug tool for developers using SPI-3 and/or SPI-4.2 buses in their system designs.

The high-performance probing, timing, and characterisation solution offers full system visibility and correlation of microprocessor, internal system bus, and external serial bus activities.

Supporting 2.5 and 10Gbit/s rates, SPI-3 and SPI-4.2 point-to-point interfaces provide an efficient means to connect a variety of physical layer devices to data link layer devices using a single bus.

Lightconnect's eight-channel Variable Optical Attenuator (VOA) module consists of eight MEMS-based VOAs. Applications include power control and equalisation, receiver protection, channel on/off switching, mux/demux and OADM modules.

Designed with an industry-common 50x53mm footprint, 12-pin header and 5V or 15V electrical drive, it provides the flexibility to interchange VOA modules from multiple vendors without altering PC board design.

Agilent Technologies' has introduced a hermetically sealed surface-mount optical driver amplifier specifically designed for use in OC-192/STM-64 10Gbit/s SONET/SDH systems.

Agilent says that the device is the industry's first surface-mount modulator driver amplifier to provide RF shielding in a hermetically sealed small-form-factor package.

TranSwitch is sampling a highly integrated EtherMap-3 OC-3 mapper for adapting Ethernet traffic onto SONET/SDH transport networks.

The IC supports eight 10/100 or one Gigabit Ethernet ports for a broad range of both SONET/SDH and Ethernet processing. Ports can be configured for a different protocol to create variable bandwidth virtual concatenation groups for data transport without wasting costly leased line SONET/SDH bandwidth.

The CMOS device features a 10/100/1000Mbit/s Ethernet MAC function, a buffering system, and VT/TU and VC-3/VC-4 mapping.

Oluma Inc has a new Variable Optical Attenuator (VOA) with integrated Tap and Photodiode (TVOA).

The low power requirements of the VOA combined with the integrated photodiode for power monitoring allow reduced fibre handling and splicing for high-density network applications.

The TVOA is available in normally open and normally closed configurations with a response time of less than 5ms.

Replacing the 7770 Routing Core Platform, Alcatel's second-generation terabit-scalable 7770 Optical Broadband Exchange core IP/MPLS backbone router has an ASIC-driven distributed switching fabric and scales from 100 to 1900Gbit/s of line-card capacity.

Its Alcatel Carrier Environment Internet System addresses both cost and reliability concerns (the control, forwarding and management planes are completely separate) and provides "non-stop" routing software for BGP-4, OSPF and IS-IS. Alcatel supports in-service software upgrades and selective re-starts.

The high-reliability architecture enables deployment of a single router at each core node. The 7770 has a standard, half-height rack-mountable chassis rather than a proprietary form factor. Expansion line-card shelves can be up to 100m away.

Alcatel offers dual-stack IPv4/IPv6 as well as tunnelling support for IPv6 over IPv4. The 7770 also uses a new generation of network processors on each line-card.

Alcatel is also developing G-MPLS support for integration with an intelligent OTN.

RAD Data Communications has a Resilient Fast Ethernet Ring (RFER) technology for re-routing traffic within 50ms in case of link failure on any segment of the ring. The system uses VLANs to overcome the storming problems when trying to broadcast over Ethernet rings or when a packet is assigned an incorrect address.

RFER is implemented in the new ML-IP Ethernet uplink module (with up to 8Mbit/s uplink capacity) for RAD's Megaplex family of modular integrated access multiplexers.

The Megaplex-based network can support up to 40 E1 lines in a ring or daisy-chain topology.

The ML-IP module also supports RAD's TDM over IP technology.

NTT Electronics Corp's Differential Driver Module (MC460-107E) is a 10.7Gbit/s LN modulator driver with embedded Bias Tee. It can be connected directly to pin type modulator, therefore only a small space is needed on the PCB, which can achieve a better optical output performance too.

The differential output can be adjusted independently, and power consumption is low (about 1W).

Oplink Communications is adding WDM components to its high-reliability undersea and wideband Tap Couplers.

The ultra Hi-Rel fused, single-mode WDM family uses fused biconical taper technology. The 980/1550nm fused products have insertion loss of <0.1dB and a flat passband for combining pump (980nm) and signal light at 1550nm in fibre amplifiers.

The Hi-Rel couplers are used in undersea amplifiers to split or combine light with exceptional performance over a wide bandwidth. They deliver excellent wavelength flatness, low excess loss and very low polarisation sensitivity.

Anritsu has three separate MU967703A clock recovery units supporting 9.953 and 10.664Gbit/s FEC rates and enabling the MP9677B E/O, O/E converter to evaluate OTN 10.709Gbit/s rates (per ITU-T G.709 OTU-2).

This yields the only combined E/O and O/E converter with the 80MHz clock recovery bandwidth needed for accurate jitter measurement at 10Gbit/s (as per the ITU-T O.172 standard).

A bandwidth selector enables the recovered clock to switch between "wide" or "narrow" bandwidth mode for jitter or BER measurement.

The MP9677B can be used with the MP1763C/MP1764C 12.5Gbit/s BERT systems or the MP1570A/A1 SONET/SDH and MP1777A Jitter Analysers for complete OC-192/STM-64 jitter measurement.

Ixia has a performance analysis and traffic generation platform for verification of RPR networks, implemented via its OC-48c and OC-192c Packet Over SONET Load Modules.

The RPR test suite enables the user to generate, analyse and capture both Data and Control packets exchanged between nodes within an RPR ring environment. The user is also able to manipulate and configure the contents of the packets to test a myriad of ring scenarios.

Ixia has added specific RPR frame statistics including fairness, protection switching, topology discovery and data as well as timeout, header CRC error and payload CRC error statistics, all monitored in real-time.

Fluke Networks' LinkWare is a free cable test data management and documentation program that allows users to import, sort and store data from multiple copper and fibre testers into a single database.

It integrates results from Fluke's DSP and OMNI Series cable testers with support for the new OptiFiber Certifying OTDR, and allows users to print customisable, graphical reports from multiple testers and projects.

LinkWare uses a format compatible with Cable Management Software and labelling programs. It also converts existing test records created by ScanLink or CableManager software.

Fiberxon's CWDM serial transceivers are available in SFP, SFF (2x5) and SFF (2x10) package types, and support eight wavelengths: 1470, 1490, 1510, 1530, 1550, 1570, 1590 and 1610nm.

Fiberxon will soon introduce modules that support 18 wavelengths with speeds of 1.0625– 2.67Gbit/s and reach of 50 or 80km.

APA Optics' 8-channel 200GHz-spacing multimode fibre (MMF)-based DWDM mux/demux has a 62.5µm core design based on a high-frequency bulk diffraction grating platform that builds on both its single-mode and 50µm-core MMF-based mux/demuxes.

The 62.5µm MMF model has lower and more uniform channel-to-channel insertion loss and larger bandwidth due to its broader flat-top passband.

The device will also work with 50µm MMF. Insertion loss is less than 1dB and polarisation-dependent loss is less than 0.3dB over –40°C to 85°C without any active temperature control. Variation across all channels is less than 0.2dB.

Other specifications include: customer-specified starting wavelength tolerance of ±0.05nm (6GHz), a flat-top passband of –0.5dB width greater than 0.6nm (for 62.5µm-core MMF) and adjacent channel isolation of greater than 30dB.

NEC's CX2510-MC FTTx Access Switch is designed for higher access speed and more variations in Internet access technology.

It is a high-density fibre accommodation device with the functions of communication prohibition and minimum bandwidth guarantee. It has a built-in Media Converter and integrated mounting device to provide various public network services.

NEC is supplying two types of carrier:

  • Those providing broadband Internet access to ISP by FTTH, Wireless LAN etc for subscribers and
  • Those providing variety of public switching services, such as VoIP, for enterprises.

Intel has a suite of five new optical components for 10 Gigabit Ethernet and 10Gbit/s FibreChannel optical transceivers.

These include the:

  • LXT16713 10Gbit/s 1:1 CDR;
  • LXT16865 TIA;
  • LXT17001 10.7Gbit/s Low Power VCSEL Laser Driver;
  • LXT12101 XAUI-to-10Gbit/s Serial Transceiver;
  • LXT17012 10.7Gbit/s Laser Driver.
The additions mean that Intel now offers all the physical layer components for the XFP, XPAK/X2 and XENPAK MSAs.

Feature package 2.1 for Tellabs' 6500 transport switch includes software upgrades that simplify networks and extend distributed bandwidth management.

Enhancements include:

  • Two integrated ring functionalities: support for two-fibre or four-fibre bi-directional line switched ring (BLSR) topology reduces the need for OADMs, and an asymmetrical ring configuration reduces the need for additional transponders;
  • A ring manager for the 6592 integrated system manager that enables management of end-to-end circuits simultaneously; and
  • MetroVantage for the 6500, a remote shelf capability. Port shelves may be located in a central office up to 40km from the switch core, eliminating multiplexers at both the hub and end-office.

The latest addition to the Cisco Complete Optical Multiservice Edge and Transport (COMET) product portfolio, the ONS 15600 Multiservice Switching Platform (MSSP), delivers multiple network elements in a single platform for deployment in a POP or large central office.

The ONS 15600 combines the function-ality of multiple metro systems, including SONET/SDH multiplexers and digital cross-connect network elements.

In addition to higher port densities, the ONS 15600's footprint is significantly smaller than traditional broadband cross-connects.

Enhancements to Nortel's Ethernet switching platforms include:

  • Support for 10 Gigabit Ethernet in both LANs and WANs in the Passport 8600 Layer 2-7 Intelligent Routing Switch via software release 3.3.
  • The Alteon 2224 Application Switch, to increase intelligence at the application layer via Layer 7 deep packet inspection. QoS features enable policies based on user, content or application. It also provides load balancing for data centre equipment.
  • The Alteon Link Optimizer, which provides intelligent traffic management, bandwidth management and health checking to optimise multi-homed network connections.

    Alcatel has two new OmniSwitch enterprise switches.

    The 8000 series, for the enterprise core, has a non-blocking 10 Gigabit architecture. A 512Gbit/s fabric gives 240Mbit/s throughput and supports 16 10 Gigabit Ethernet wire rate ports or 384 Gigabit Ethernet ports.

    The 6000 series has a virtual chassis switch to eliminate all single points of failure at the network edge. Each switch in a stack is a potential management module and there is an automatic election of primary, secondary and idle switch. Stacking redundancy is recursive so manageability and service are preserved.

    New features for Redback Networks' SmartEdge 800 Router include Layer 2 MPLS VPNs and QoS enhancements. Also, features such as Bulkstats and Traffic Mirroring allow better network management. This allows a complete suite of VPN services on one platform including GRE VPNs, BGP/MPLS Layer 3 VPNs and MPLS-based Layer 2 VPNs. Backbones can be migrated to IP/MPLS Layer 2 or 3 non-disruptively.

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