Latest DWDM products - Dense Wavelength Division Multiplexing - News Briefs - Product Announcement

Communications News, Oct, 1999

Wavelength multiplexer

COMBINE OR SEPARATE any odd and even wavelength within a specified spectral range up to 35 nm. ITF Optical Technologies has developed its MZI-100 Mach-Zehnder InterLeaver to interleave two sets of up to 20 wavelengths with spacings as narrow as 200 GHz to achieve up to 100-Ghz channel separation. ITF's Interleavers can be used to multiplex or demultiplex wavelengths with channel separation down to 50 GHz. This bidirectional all-fiber device features excellent temperature stability and very low insertion loss.-ITF Optical Technologies

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MultiWave EdgeDirector

DELIVER HIGH-BANDWIDTH SERVICES to the last mile. CIENA's multiservice transport platform (acquired with the purchase of Omnia Communications) has been integrated into its LightWorks optical network architecture and renamed the MultiWave EdgeDirector 500. CIENA's LightWorks architecture offers bandwidth and intelligence at three key points including optical transport, reached through MultiWave CoreStream and MultiWave Metro; intelligent core switching via MultiWave CoreDirector; and, now, the ability to harness core fiber capacity and deliver it as last-mile services through the MultiWave EdgeDirector. The MultiWave EdgeDirector 500 is a next-generation multiservice transport platform that utilizes packet and cell technology to enable service providers to cost-effectively deliver traditional voice, digital private line, and new high-speed data services over a single optical network This platform supports multiservice transport over fiber-optic rings; DSLAM concentration for converting TDM and IP traffic to ATM for transport over backbone networks; ATM service access multliplexing to adapt and concentrate voice, data, and private line services for delivery to an ATM switching system; and TDM grooming for transporting voice calls over core carrier networks.-CIENA Corp.

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GigaMux

INCREASE FIBER BACKBONE throughput up to 32 times. Osicom's Metro DWDM provides up to 32 2.5 Gbps (OC-48) channels over a single fiber. Osicom has developed a common object request broker architecture (CORBA) module for its GigaMux 32 channel. CORBA is a topology-transparent architecture. The CORBA module will enable service providers to manage multivendor networks from a Java-enabled terminal and help them to deliver new services efficiently. The GigaMux permits system throughput up to 80 Gbps while operating over an existing fiber plant. Osicom's DWDM allOWS enterprise and metropolitan networks to utilize the extensive bandwidth of optical fiber. GigaMux has the ability to accept mixed data formats for versatility in design and operations of convergent communications networks.-Osicom Technologies, Inc.

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Scalable DWDM

OPTIMIZE DWDM for metropolitan networks. Qeyton Systems has launched its QS200 product line that offers node efficiency. Qeyton's ability to provide channel-by-channel upgrades on any node gives ISPs and CLECs the freedom to pay as they grow. Due to the modularity of the QS200, custom upgrades enhance scalability and reduce initial investment. A key feature of the QS200 is its less than one millisecond optical-protection switching, which can be assigned to individual wavelengths, increasing the availability of service. QS200's high node efficiency enables unamplified fiber spans of 100 km or more, depending on network application, number of nodes, and wavelength channels--Qeyton Systems

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DWDM modules

ENABLE HIGH-CAPACITY 100-GHZ DWDM to increase bandwidth easily. E-TEK's solution is suitable for long-haul telecommunications and emerging short-haul metropolitan markets. E-TEK's DWDM components and modules with 100-GHz spacing are assembled using dielectric thin-film filter technology in packages with four, eight, 16, or higher channel counts.

The DWDMs have low insertion loss and high channel isolation. These passive devices have excellent thermal stability and do not require temperature control. The same narrowly spaced DWDM filters can be packaged into add/drop optical modules (ADOM) for systems requiring flexible wavelength routing platforms and configurations.--E-TEK Dynamics, Inc.

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GlobeSystem

CROSS-BORDER LINKS are being lit with Teleglobe's DWDM technology, enabling each fiber to transmit up to 400 Gbps of capacity or 40 wavelengths at 10 Gbps (OC-192) per wavelength. Teleglobes GlobeSystem provides customers high capacity per fiber pair for its 300-kin fiber-optic link interconnecting its GlobeCity network access sites in Vancouver and Seattle. Teleglobe projects that it will light 1,300 km of dark fiber connecting Montreal and New York (with further connections scheduled to other cities). These two DWDM fiber deployments will link with the rest of Teleglobe's North American fiber backbone, currently at OC-12 but to be upgraded to OC-48--Teleglobe Communications Corp.

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