GbE/DWDM on converged metro optical platform
Lightscape Networks has enhanced its XDMT converged metro optical networking platform to allow greater traffic control and bandwidth management allocation for carrier-class Gigabit Ethernet (GigE) connections while using existing infrastructure and reducing network cost of ownership.
The XDM GigE card combines the bandwidth scalability of DWDM and the reliability of SONET/SDH with the data efficiency of GigE in a single converged solution. Use with the XDM's integrated optical DWDM and DCS allows transparent provisioning of up to six GigE interfaces directly onto a single DWDM wavelength or up to eight GigE per card through the cross-connect matrix directly onto any SONET/SDH or DWDM interface. The XDM can support up to 96 GigE interfaces per shelf.
The card configures Ethernet transmission rates separately for each connection, enabling instant increase of allocated bandwidth - up to full GigE capacity - without equipment upgrades or re-provisioning, using the XDM converged network management software.
Single-board 10Gbit/s transponder
New to its family of single-board, single-slot solutions, Lumentis AB has developed a compact (220x230mm) plug-in 10Gbit/s Transponder (available in Q4/2002) for 10Gbit/s SONET/SDH and 10 Gigabit Ethernet traffic in its metro networks.
Coupled with a Mentis 3000 unamplified metro DWDM platform, it removes the need for intermediate termination or additional de-multiplexing while carrying traffic to and from long-haul networks.
The Transponder can place all its functionality onto a single board while providing a high-quality transmission interface that operates on the DWDM layer. The board is G.709-compliant via a digital wrapper with built-in performance monitoring and supports FEC and embedded management channel.
Auto optical jumper tracing and administration system
OFS' Optical Connectivity Division (OCD) says its iLight Automated Optical Jumper Tracing and Administration System solves the problem of error-prone and time-consuming administration of optical patch panels by enabling instant identification and locating of fibre jumper ends.
The system can cut the time from hours to seconds to search for jumper ends in the clusters in optical patch panels.
It can be operated locally or remotely and provides automated self-diagnosis features. Tracing Assistant 1.2 allows users to examine, edit, print, and back up the location-data of all iLight-supported shelves anywhere in the network as well as download work-order instructions to technicians in an iLight-equipped central office.
The iLight solution uses distributed intelligence at the shelf-panel level in wire centres or central offices and can be installed on existing cross-connect termination shelves using flexible circuitry overlays. iLight jumper tracing can also be bought ready-to-use in pre-built or pre-cabled termination shelves.
iLight tracing requires no special jumpers, nor any modification or replacement of existing jumpers.
Sub-600mW GbE transceiver chip
STMicroelectronics' single-channel STE1000P chip is the first member of a complete family of Gigabit Ethernet transceivers launching over the next 12 months, including multiple ports and additional functions.
It claims record low power consumption of 600mW, due to 0.18mm CMOS, architecture improvements, and a circuit design that has led to over 10 patents related to power-saving in both analog and the digital sections (already applied for Ethernet and Fast Ethernet).
The design includes improved implementation of the PMD Viterbi decoder, the timing recovery circuit, the analog feed-forward and adaptive digital gain controls and the low-power adaptive finite impulse response digital filter.
Applications include PC network interface cards, LAN-on-motherboard solutions, uplink ports of networking equipment such as Fast Ethernet switches and routers and the LAN interface of data-intensive peripherals.
Second-generation 10Gbit/s-10GbE transponder
ADVA Optical Networking's second-generation 10Gbit/s transponder for its Fiber Service Platform (FSP) 3000 metro transport system supports STM-64/OC-192 as well as 10GbE applications, including LAN and WAN PHY - unique for a metro DWDM systems.
Power consumption is <30W and size 50% smaller than normal.
The OC-192/STM-64/10GbE module offers a power budget of 30dB. Improved modular technology enables uncompensated transmission distances of up to 90km on G.652 fibre and 300km on G.655 fibre.
For longer distances, an optional in-band FEC enhances the power budget or relaxes the requirements on received OSNR by about 5dB. The card also supports B1 performance monitoring on the SDH/SONET signals and correction statistics of the FEC.
SFF SONET/SDH transceivers
Optimised for high-density data transport in metro and access networks, Agere Systems claims its NetLight NLT series of high-speed pin-through-hole transceivers is the most complete line of small-form-factor (SFF) transceivers for SONET/SDH, from OC-3 (155Mbit/s) to OC-48 (2.5Gbit/s) at distances of 2-80km.
Acterna's FST-2510A TestPad High Speed Optical Analyzer cuts time-to-revenue and -repair as providers deploy and maintain DS1 to 10Gbit/s services in metro and DWDM networks.
It allows installation and maintenance of electrical and optical (SONET/SDH) services and network elements for multi-service provisioning platforms in metro networks via a single module.
At 15lbs, it is portable and can also serve as a central office tester. It supports bit error rate testing of 1.5Mbit/s to 10Gbit/s line interfaces, and can analyse multiplexed payloads as well as concatenated signals.
EXFO's IQS-5250B optical spectrum analyser is part of the IQS-500 modular optical test platform.
Resolution bandwith is 33pm, suitable for R&D applications. Long-term wavelength uncertainty of ±30pm is guaranteed by a new standard autocalibration function performed with an internal reference source.
An easy to use S/W application contains several advanced spectral analysis function.
Multi-layer network test platform
Through its open-architecture design, NetTest's CMA5000 Multi-Layer Network Test Platform offers high-performance measurement applications in one modular platform that enables networks to be installed, commissioned and documented more efficiently with less cost.
Its flexibility and scalability allows it to evolve with testing needs and technology for ever-changing infrastructures. It includes all required testing applications to install, commission and maintain multiple layers of complex, converging networks.
The CMA5000 combines versatility and ease-of-use for multiple network layers. Applications range from OTDR, OSA and Dispersion to BER and Gigabit Ethernet test.
10 Gigabit transport IP core kit
Targeting SONET, SDH, OTN, ATM, and Ethernet applications, Paxonet Communications claims the most comprehensive set of 10G Intellectual Property (IP) cores.
With the addition of the 10 Gigabit Transport IP Kit, its CoreEl IP Core line completely encompasses the 10Gbit/s space for the design of flexible 10Gbit/s solutions based on both FPGA and ASIC technology.
The CoreEl IP core line covers a full range of protocols and line rates, providing the most complete set of IP Cores. CoreEl IP cores, including those in the 10G Transport Kit, can interconnect without effort, composing a full set of interoperable building blocks. This enables the construction of tailored solutions.
Paxonet combines its expertise from its interoperable CoreEl IP Cores and MetroConnect IC solutions, to enable Ethernet, SONET, SDH, ATM and OTN equipment designers to offer highly differentiated, low cost-based solutions, accelerating the development of their product lines.
The complete set of building blocks for 10Gbit/s transport includes applications in routers, aggregators, multiservice platforms, repeater/regenerators, optical modules, and test solutions. The kit enables system vendors to integrate CoreEl's standardised blocks into ASICs, allowing equipment designers to focus on their unique portion of the ASIC. In addition, the kit facilitates test equipment vendors in building the extremely flexible test solutions required for their equipment; solutions not available among standardised ICs.
10Gbit/s LR-2 50GHz-spaced optical transponders
Vitesse Semiconductor is shipping its VIT5200 optical transponder - part of the VIT10 family - which has <2dB Optical Dispersion Penalty (as specified in the GR-253 Core, issue 3, September 2000 under LR-2c specifications) designed for long-reach (up to 80km) metro and regional DWDM applications without optical (EDFA) amplification, and above 80km when paired with a Vitesse high-gain FEC.
The transponder relies on technology from its predecessor, the VIT5000, but allows a doubling of the number of wavelengths over an existing network by providing 50GHz channel spacing (e.g. from 40 to 80 in the C band).
A single configuration of the VIT5200 offers multi-rate application support for SONET (OC-192), 10 Gigabit Ethernet and 10.7Gbit/s FEC data rates in core and access network applications.
Multiple rates start with 9.95, 10.3 and 10.7Gbit/s with both PIN and APD options.
Faster system verification
Agilent Technologies' OmniBER XM network simulator (shipping in early 2003) uses multi-channel parallel testing for fast system verification test (SVT) for next-gen SONET/SDH and metro network equipment.
It can simultaneously generate real-life network signals using mixed payloads with errors and alarms on up to 192 channels in a single port. This replicates real-world network conditions to enable true stress testing of network elements and increase the effectiveness of verification test. It simultaneously measures each channel for relevant errors, alarms, and bit error ratio, and also includes intrusive through-mode capabilities.
The modular design is scalable to throughput targets, and can easily be integrated with other test equipment using the on-board application-programming interface for fast set-up.
CWDM units using zero-water-peak fibre for intelligent metro
Using vendor partner OFS' CWDM-optimised AllWave zero-water-peak fibre, Wavium AB launched a series of CWDM units that complete its portfolio of building blocks for intelligent metro networks, which now comprises the optical cross-connects WX1000; the transponder shelf TX1000; 4- and 8-channel multiplexers and add-drop modules, CX-series; and the WaveMaster management system.
Wavium supports all physical topologies: point-to-point, point-to-multipoint, rings, meshes, including a combination in the same network.
In metro, local and access networks, AllWave can increase network capacity up to 50% while cutting application costs by up to 40%. It is also compatible with existing single-mode fibre systems, allowing incremental upgrades. "Implementing AllWave in CWDM networksellipseenables carriers to add new capacity and services cost effectively while still allowing future upgrades with DWDM," says Santanu Das, OFS' Director Metro Optical System Engineering.
"The Wavium solution reduces the equipment cost by a factor of two when compared to similar DWDM solutions," added Wavium CEO Mikael Hedlof. It handles wavelengths transparently across the metro network. A novel mechanical approach offering superior modularity and flexibility in a compact design, Wavium has brought a new dimension to "pay-as-you-grow" through pluggable transceivers of different formats and bit rates, while the WaveMaster management system allows a node or a subnetwork to be connected to any other node in the network, e.g. a ring can be converted into a meshed network when needed. An operator does not have to choose between cost of installation and cost of operation.
Low-loss DWDM products
APA Optics has made available premium low insertion loss (<3dB) models of its standard (4dB) 16-channel DWDM products.
Its passive athermal performance helps reduce overall system cost for its customers because it avoids the need for several watts of power to drive heaters or other temperature control devices and for system monitoring and alarms to signal malfunction of temperature control devices required of high channel count components based on other technologies.
Low insertion loss models have been achieved through improvements in design and assembly of the bulk diffraction grating based DWDM components. Improvements in packaging have contributed to demonstrated stability during humidity aging and thermal aging.
Enhanced blown fibre
Pirelli Telecom Cables & Systems has introduced a higher-fibre-count 12-fibre single-mode module to extend the range of Sirocco blown fibre products for low-cost network start-up, flexibility for network growth and re-routing.
For connecting a metro ring to a new customer, standard practice has been to install a traditional 12-, 24- or a 48-fibre cable.
Made exclusively under licence from BT Group plc, the standard design is a 3-layer UV-cured acrylate matrix, with the inner a low modulus layer to prevent micro-bending, a high modulus layer for protection, and a low-friction coating containing microspheres.
The module bundles the fibres in a small, light, easy-to-remove coating with a surface modified layer to produce good blowing performance.
Typical breakout time is 1 minute and it can be blown a distance of 600m in about 20 minutes.
40km MiniPHY-300 expands reach
Network Elements' flexible 40km MiniPHY-300 module is for use in 10Gbit/s SONET/SDH, Ethernet (10GbE) MAN, LAN, WAN, DWDM, OTN, RPR and MPLS applications.
The integrated design allows a reduction of up to 50% of the board space demanded by alternative 300-pin modules, and multiple modules on a single line-card.
It has 1550nm EML serial optics, a transmit reference clock jitter filter and low power dissipation. Meeting small-form-factor requirements and dissipating <7W, it allows integration of multiple 10Gbit/s channels on a single-slot line card.
A standard I2C bus with an integrated microprocessor enables digital measurement of system conditions. Items such as loss of signal, laser temperature, laser bias, and receiver power can be recognised easily and adjusted via user-defined parameters.
The module performs optical-to-electrical and electrical-to-optical conversion, clock/data recovery, transmit clock frequency multiplication, de-serialisation and serialisation.
Merging wavelength power/SONET for metro transport applications
Photuris has entered the metro regional market with a dynamic Optical Distribution System that merges wavelength power and SONET simplicity for interoffice networks.
Unique optical innovations give a fully automated optical layer, judicious integration of WDM/TDM transport, and flexible, per-wavelength protection.
The technology includes the following:
- A fully-automated optical layer and intelligent control plane, optimized for 2.5-10Gbit/s, which provides dynamic and reconfigurable optical add/drop at single wavelength granularity and real-time remote provisioning.
- Integrated WDM/TDM transport, with familiar SONET provisioning and management practices, live node insert and support for subtending TDM access rings.
- Scalability and pay-as-you-grow modularity.
- Mix-and-match per-wavelength protection for diverse traffic patterns and services.
Low-cost 12Gbit/s PRBS pattern generator
LA Techniques Ltd's LA19-02-01 low-cost 12Gbit/s pattern generator is an alternative to a fully featured pattern generator and follows the formula of the 3Gbit/s model.
The LA19-02-01 has two user-specified internal clocks plus external clocking over the range 2-12Gbit/s, choice of pattern length, user-programmable pattern, high-level variable output, and output bias tee.
Compact fibre routing in DWDM PLCs
Schott Optovance Inc has customised its Optical Shuffle family for compact fibre management in system boards and backplanes (which has sold over 10,000 units) to extend it to complex, confined routing for high-channel-count integrated optical DWDM devices.
With standard terminations for fibre pitches of 250 and 127mm, it has been designed-in by manufacturers of arrayed waveguide gratings (AWGs) but will also be applied to other photonic lightwave circuits (PLCs) such as VOAs and Dynamic Gain Equalizers (DGE).
A compact ribbon design enables greater flexibility in board design and use of parallel connectors for extra space savings at the card edge. Since space is at a premium, the Optical Shuffle for PLCs not only solves the problem of interconnecting, but also of rerouting and reordering fibres and components when the channel-to-channel pitch is different from the fibre ribbon pitch - often the case with AWGs.
TIA for 10Gbit/s
TriQuint Semiconductor Inc has expanded its family of 2.5-44Gbit/s standard products with the TGA4805 OC192 differential output Transimpedance Amplifier (TIA), suited for metro DWDM systems. It provides greater noise sensitivity in the optical receive path.
The TGA4805 is a high transimpedance gain, extremely low noise device that needs only a single 5V supply while keeping power dissipation to an absolute minimum.