The FOB optical circuit products are designed to furnish high-density optical interconnection utilizing both single and multimode fibers. Compatible with all standard optical connectors, these circuits provide compact and lightweight fiber management in highly-customized layouts. Precise control of fiber geometries yields overall losses of <0.05 dB over an operating temperature range of -25°C to +85°C. These circuits feature easy installation and can be designed using the company's FOBSoft CAD Software.
Advanced Interconnection Technology Inc.
This line of tunable laser sources permits the use of a single emitter board to cover a number of different wavelengths, reducing the number of boards for DWDM-system backup. The lasers cover up to 32 DWDM channels with 50-GHz spacing. The company offers two tuning technologies: the 1905 TLI and the 1905 TLM. The 1905 TLI is thermally controlled and can be tuned to up to 8 channels, offering up to 20-mW output power. This laser is optimized for use with external LiNbO3 modulation and is compatible with high-power DWDM applications without using an external locker. The 1905 TLM uses DBR laser technology and can be tuned to up to 32 wavelengths, offering 10-20 mW. Using a monolithic DBR laser, it is optimized for high-power DWDM applications.
Based on reflective grating technology, these chirped fiber Bragg gratings for EDFA gain flattening work in the 1,500- to 1,600-nm wavelength range. They are based on the customer's filter shape and offer very low insertion loss at <0.5 dB and very low ripple at a maximum of <0.25 dB.
HighWave Optical Technologies
Designed for optical amplifier application, these hybrid isolators combine a WDM filter or Tap filter and a polarization-insensitive optical isolator. According to the company, they feature low polarization sensitivity, low insertion loss, and high optical isolation. Compact and easy to install, the isolators eliminate splices and extra fiber routing.
These pump combiner components are targeted at Raman applications and, as WDMs, enable the combination of pump-laser sources in the 1,400-1,500-nm window. Fused fiber implementation of these devices enables low loss, low PDL, and excellent power handling, according to the company. Standard channel spacing is 25 nm and above with passbands of ±2 nm suitable for grating stabilized pumps.
JDS Uniphase/SIFAM Fibre Optics
Suitable for ATM 155-Bits/sec links and SONET OC-3/SDH STM-1 interconnections, the HPT DTR-03 is a 1,310-nm singlemode transceiver with a single +5 V power supply and a PECL logic interface. It is compliant with the ATM Forum 155-Mbits/sec Physical Layer specification and ITU-T G957. The transceiver is packaged in a 1x9 integral duplex SC industry-standard style and is available in two temperatures, 0 to +70, or -40 to +85. According to the company, the HPT DTR-03 has a high optical and electronic performance level. The transmitter section consists of a 1310-nm MQW laser and laser driver IC. The receiver section includes a PINTIA (a mounted PIN photodiode with a transimpedance preamplifier IC in a TO-46 can) and a post amplifier. Its sensitivity is better than -39 dBm.
Hi-optel Technology Co. Ltd.
These fused-fiber singlemode wavelength-division multiplexers combine or separate light at two different wavelengths with low insertion loss, high wavelength isolation, and low polarization dependence, according to the company. They have passed a thermal cycling test from -40 to +85 in 6 cycles. These WDMs are ideal for capacity expansion in telecommunications systems, monitoring systems, and EDFA applications, including 980/1,550-nm, 1,480/1,550-nm, and 1,310/1,550-nm WDM.
Pearl Communication Technology (Shenzhen) Co., Ltd.
This next-generation electronically controllable optical attenuator features a very precise structure with neutral density filters and collimators. Compact and lightweight, the attenuator is externally controlled and is compliant with the Bellcore GR-1221-CORE standards.
Designed to meet the growing demand for ATM and SONET/SDH, these multimode and singlemode transceivers come in 1x9 or 2x9 duplex SC or pigtailed packages. With LEDs, FP lasers, and DFB lasers inside transceivers, data and voice communications can be transmitted over distances from 2 km to 100 km.
Photon Technology Co. Ltd.
The PMDC 2000 compensates the first and second order polarization-mode dispersion (PMD) of a transmission fiber independent of the signal format and the transmission rate. The compensator operates in front of the optical receiver of each transmission channel. The very-fast control loop is achieved through a patent-pending measurement and control procedure. The PMDC 2000 is available as a compact module for easy installation into optical transmission systems.
Profile Optische Systeme GmbH
An electronically controlled, all-fiber, polarization-maintaining variable attenuator, the PM VOA has no moving parts, free-space elements, or bending mechanism. It attenuates light by modifying the guiding properties of the fiber, which enables precise control of the transmitted light and ensures no cross-coupling between two polarization states. The mechanism also provides a precise attenuation of the two polarization states, with a near-zero back reflection. The attenuators come in a range of attenuation levels from 0 to 40 dB with a minimum insertion loss of <0.1 dB. The VOA is available in three standard options: miniature devices for use with user-defined electronics, PCB mounted with integral driver, or as standalone instruments. The devices can be packaged in 4- or 8-channel modules.
ProtoDel International Ltd.
Designed for long-distance fiber-optic networks, these SC APC tuned connectors operate via a tuning process that follows the cabling operation and is performed at the front of the connector. The technique consists of rotating the optical ferrule to locate the core in a predetermined permanent sector, thereby reducing the off-set between fiber cores. Optimization can be done at any time on any standard cable assembly using the company's range of FC and SC connectors. A patented system protects the floating mechanism during the resin injection process, and an inner sleeve protects the fiber and ensures the jacket retention as the crimp ring retains the Kevlar. The connectors feature a new protection boot and a fully removable duplex brace for SC, PC, and APC versions.
Rosny sous Bois, France
An alternative to passive, dual-channel, plastic-fiber rotary joints, these contact-free capacitive rotary joints optoelectronically convert and transmit optical data. Bus-specific interfaces can be integrated to support complete Bus protocols as well as customer-specific interfaces for plastic fiber and multimode or singlemode glass fiber. The technology is suitable for large free inner bores and slip ring integration. The joints feature high data rates, bidirectional transmission, and immunity against EMI, EMP, and ESD. Robust and compact, the joints are electrically isolated and suitable for use in explosive areas.
This mechanical switch is lightweight, compact (1x1 and 2x2), and ideal for mounting on an optical circuit board. It has a self-sustaining mechanism, which minimizes power consumption. High- performance is achieved by the Au-coated mirror. Evaluation samples are available upon request.
Seikoh Giken Co. Ltd.
The Lasiris ultra-long phase mask is a holographic phase mask, used to produce fiber Bragg gratings which, when recorded or photo-imprinted on the core of a photosensitive optical fiber, optimize the transmission of data and/or voice traffic over high-capacity fiber-optic networks by demultiplexing the different channels. The phase mask has a grating length of 150 mm.
The Advanced Optical Module Assembly System, or FOCAL, enables manufacturers of fiber-optic components to fully automate their optical module assembly, generating significant gains in productivity, product consistency, and overall manufacturing efficiency, according to the company. FOCAL systems may be optimized for automated production of YAG lasers and AWG components using a UV curing process.
This 19-inch optical fiber distribution frame features whole-front operation and a fully equipped distribution capacity of 720 ports. It may be used with FC- or SC-type adapters (in an oblique installation) and ribbon or non-ribbon optical cable. A wholly enclosed structure, the frame is equipped with a cable inlet unit, a fiber storage unit, a unit for fiber jumping between frames, and a stripped optical cable fixing and protection device. The distribution frame has received the Network Access License for Telecommunications Equipment, issued by China's Ministry of Information Industry, and an ISO 9002 certificate from BSI.
Shenzhen Sun&Sea Comm Equip Co. Ltd.
A fiber access solution for last-mile, high-speed data links, the CityLIGHT system connects to all common customer equipment interfaces and transmits data over singlemode-fiber at distances up to 60 km. CityLIGHT features a range of protocols, including Gigabit Ethernet, ATM-155, ATM-622, Fibre Channel, and Fast Ethernet. Accommodations for copper legacy equipment support for T1 and E1 are also available. Designed as a carrier-class system, the CityLIGHT offers hot-swap dual redundant AC and DC PSU options and NEB approval. Applications include point-to-point links, co-location, ATM tail circuits, disaster recovery, virtual private networks, bulk data transfer, dark-fiber management, metro data services, and high-speed Internet links.
First Fibre Ltd.
Designed for use in city networks, these erbium-doped fiber amplifiers include two couplers, two isolators, a WDM, a pump laser, and the erbium-doped coiled fiber. Two glass fiber connectors form the optical interface. According to the company, the amplifiers boost the performance and reliability of the fiber infrastructure, securing network expansion by increasing the number of nodes and extending route distances covered.
AMS Technologies GmbH
Developed by the company's MEMS and microphotonic packaging engineers, this all-optical crossconnect scales from 32x32 to higher port counts. All-optical crossconnects allow telecommunications equipment providers to provide protocol and bit-rate independent switching at the optical layer, increasing network efficiency and bandwidth capacity.
C Speed Corp.
Santa Clara, CA
Designed for analog, WDM, or digital applications, this high-power erbium-doped fiber amplifier is available from 24-30 dBm. An optional integrated preamplifier ensures low-noise figure combined with high-output powers delivered by the booster stage. Low power consumption results from high-efficiency pump diodes of double-cladding fiber and direct wavelength conversion from pump to signal. The benchtop versions, designed for research applications, are ready to use and offer a GPIB interface.
The LM100 UV copper laser has a beam diameter of 4 mm with a divergence of 0.3 mrad, a spatial coherence of better than 2 mm, and a coherence length of 40 mm. It features excellent pointing stability, which ensures highly reproducible grating quality, sharper grating response, and a more consistent performance, according to the company. The laser requires only 4 kW of power, which eliminates the huge electricity and water-cooling requirements of some lasers. Unlike other pulsed lasers that can damage fibers during the manufacturing process and considerably reduce material strength, the LM100 delivers high average power in a series of small pulses at a high repetition rate. In addition, the laser requires only a trickle flow of neon, eliminating the need for toxic gas.
Oxford Lasers Ltd.
The OptSim 3.0 design and simulation software for optical-fiber transmission systems upgrades its existing fiber model with the Raman effect and offers a new data post-processing and display interface for the management and display of simulation results. Depending on system design, the Raman effect can be an impairment or a benefit in optical transmission systems. OptSim 3.0 models Raman-induced noise and crosstalk in DWDM systems and offers a distributed Raman amplifier module supporting co- and counter-propagating pumps and single and double Rayleigh scattering of noise. Custom gain profiles are definable through an external file. The data display interface features interactive cursors to read-out data and define eye masks, automatic peak detection, and the ability to combine and plot simulation from different runs.
ARTIS Software Corp.
San Jose, CA
The FPM-8210 Low PDR Fiber Power Meter is optimized for bare fiber and fiber-optic component production power measurements. Designed for ease of use and repeatable results in production test stations, the meter delivers low response to variations in polarization and fiber end position. The device features the company's unique integrating cavity design, which uses the same detector cavity port for all measurements.
ILX Lightwave Corp.
The AWT-200 high-resolution fiber-optic video microscope consists of a rigid, insulated probe that can be inserted into the slot that is left when a plug-in card is removed from an equipment chassis, while simultaneously inspecting front-panel and patch-panel connectors. The unit features a range of industry-standard tips and a choice of three interchangeable barrel lengths and is flexible enough to accommodate new connector and tip upgrades as they become available. The AWT-200 is stored fully assembled in a water/airtight rugged carrying case. Its lightweight and robust construction make it ideal for portable applications using either a free-standing monitor, notebook PC, or the company's LCD monitor and battery pack combination. The inspection unit is also safe, as it does not require physical contact with either the adapter guide or the connector itself.
Aerotech World Trade Ltd.
A fully portable chromatic-dispersion analyzer, the v-CD is based on direct time-of-flight measurement, with photon-counting detection. It features a high dynamic range of 35 dB over the whole C-band, which is adequate for the characterization of all installed fibers. Measurements take roughly 10 sec, with 1% precision on the chromatic-dispersion coefficient D. No communication is required between emitter and analyzer. Small and lightweight, the emitter is specially designed for field measurements. Custom specifications and options are available, including S-band analysis and multi-emitter configuration for efficient testing of large networks.
This hand-held optical loss test set combines a light source and power meter in a single unit for automatic bidirectional testing of fibers in the field. Automatic measurements can be initiated from either end of the cable for better productivity over traditional loss test techniques using standalone instruments. Test-time savings are typically of the order of 85%, according to the company. The new tester offers all of the standard loss and link return loss measurements at 1,310 and 1,550 nm and fiber verification functions. The instrument checks all results against predefined thresholds and qualifies the total fiber link with a clear pass/fail.
Wavetek Wandel Goltermann
Research Triangle Park, NC
The TUNICS family of tunable external cavity lasers has expanded with two new higher-performance versions: the TUNICS-Plus and TUNICS-Purity. Both feature an Active Cavity Control that delivers mode-hop-free operation over the entire tuning range (up to 100 nm), according to the company. The TUNICS-Purity offers a new ASE-noise-free operation at full power (3 dBm) with a smart intra-cavity filtering design. The new internal reference ensures long-term absolute wavelength accuracy. TUNICS-Plus and TUNICS-Purity provide complete wavelength range overlap in the S-, C-, and L-band, and the entire TUNICS product line fully covers from 1,260 to 1,640 nm.
A fully electronically tunable external-cavity laser, the ECL-210 is designed for use in both research laboratories and production and installation environments. The slimline 19-inch rack houses up to 8 channels and allows for full control through either the GPIB or RS-232 interfaces. The ECL-210 has a full 80-nm tuning range and covers all DWDM wavelengths between 1,460 nm and 1,640 nm. The wide tuning range is complemented by high output power up to 10 mW and wavelength and power stabilities of better than 0.01 nm and 0.01 dB, respectively.