The G8198 series of InGaAs PIN photodiodes have high-speed response at low reverse voltage. The -01 has 3-GHz response and the -02 has 2 GHz when VR = 2 V. The -01 has typical 0.06-nA dark current and 0.6-pF terminal capacitance. The -02 has typical 0.08-nA dark current and 0.9-pF terminal capacitance. Both have a spectral response range from 900 to 1700 nm with peak sensitivity at 1550 nm. Photosensitivity is typically 0.95 A/W at 1550 nm.
Hamamatsu Corp., Bridgewater, NJ
A group of 100-GHz WDM devices for long-haul and metro markets are available as 100-GHz add/drop WDMs, 4-channel and 8-channel WDM modules. They have 0.2-nm passbands with <0.5 dB of ripple and 25-dB minimum isolation. They are available with more than 160 different center wavelengths in the C- and L-bands. They can be had as either components or as integrated modules for use in terminal equipment, add/drop multiplexing, and optical crossconnect applications.
DiCon Fiberoptics, Berkeley, CA
The FIBEX excimer laser writes fiber Bragg gratings. The laser has spatial coherence of >2 mm, producing sharp fringe patterns with a phase mask. A cavity that eliminates drift and vibration creates beam-pointing stability of <100 µrad. Pulse-to-pulse stability is sigma <1%. It has a repetition rate of 200 Hz for high throughput.
Lambda Physik, Fort Lauderdale, FL
ZeroShift passive optical components include 100-GHz narrow bandpass filters with insertion loss of <0.5 dB, center wavelength drift of <1 pm/°C, and stop-band isolation of <1.2 nm at -.025 dB. Standard filters are available at all ITU grid wavelengths in the C-band. The filters meet all Telecordia requirements for environmental exposure and durability.
Spectra-Physics, Mountain View, CA
The NR-9200HR optical-fiber analyzer determines the refractive index profile, complete core and cladding geometry, mode-field diameter, effective area, chromatic dispersion, cutoff wavelength, and numerical aperture of fiber in a single experimental setup. The instrument uses both the refracted near-field and transmitted near-field methods.
EXFO, Vanier, Que., Canada
AngströmBond AB9119 is a two-part epoxy system that can cure in 15 min at 100°C or as fast as 5 min at 150°C. It has a working time of 2 h and changes from light yellow when mixed to red-amber when fully cured. It has reduced potential to cause dermatitis.
Fiber Optic Center, New Bedford, MA
DWDM modules at 200 GHz come in 4- and 8-channel models and are based on thin-film filter technology. They have 2.5- and 4.2-dB lowest insertion loss, respectively, and come in a 150 x 120 x 8-mm box. They are manufactured with micro-optomechanical techniques for an ideal passband curve and are evaluated by Bellcore test.
HD FiberSystems, Santa Clara, CA
OPTICAL CASSETTE MODULES
Optical cassette modules are available in three sizes, compatible with LGX-style high-density fiberoptic enclosures. They can be configured with optical components, including wide band couplers and splitters, taps, WDMs, and attenuators. Fiber inputs and outputs can be terminated into an adapter or assembled with pigtails using any industry-standard connector.
FONS Corp., Northborough, MA
COARSE WDM FILTERS
The IST BP402 standard 8-channel coarse WDM filters have center wavelengths of 1471, 1491, 1511, 1531, 1551, 1571, 1591, and 1611 nm. Insertion loss is 0.5 dB. Ripple is <0.3 dB. Bandwidth at -0.3 dB is >13 nm and at -30 dB is <26 nm. Typical size is 1.4 x 1.4 x 1 mm. Customized 4-, 6-, and 8-channel filters are also available.
Iridian Spectral Technologies, Ottawa, Ont., Canada
The Optofab3000 optical coating system uses ion-beam sputter deposition to create thin-film DWDM filters. It uses a 15-cm RF ion source with dished molybdenum three-grid design. At 450 mA it has a deposition rate of 3.0 Å/s for SiO2 and 3.35 Å/s for Ta2O5. It delivers layer uniformity of <±1%. It has a footprint of <3 m2.
Oxford Instruments Plasma Technology, Bristol, England
WDM OPTICAL FILTERS
BragNet optical filters provide channel spacing of 25, 50, 100, or 200 GHz and bandwidth of 0.1, 0.2, or 0.4 nm. Adjacent channel isolation is <-30 dB and nonadjacent channel isolation is <-35 dB. Blocking over channel is >25 dB, peak reflectivity is >30 dB, wavelength accuracy is ±500 MHz, and thermal stability is 50 MHz/°C.
Southampton Photonics, Cupertino, CA
OPTICAL VARIABLE ATTENUATOR
The OVA-650 optical variable attenuator is designed for DWDM systems and uses a low-polarization-dependent, neutral density filter for the C- and L-bands. It has an insertion loss of <0.6 dB and comes in either 15- or 30-dB configurations. It has polarization of <0.15 dB and low temperature and wavelength dependence.
Santec Europe Ltd., Oxford, England
COARSE WDM MODULES
A line of 4- and 8-channel coarse WDM modules is designed for the metro optical Ethernet market. The 4-channel module multiplexes four DFB lasers in the 1500-nm window and supports a variety of link budgets from 3 to 20 dB. They have 20-nm channel spacing, which allows uncooled laser operation. The 8-channel modules have similar characteristics.
Luminent, Chatsworth, CA
A splitter uses the planar-lightwave-circuit technique. It has an operating temperature range of 40°C to 75°C and operating spectra of 1310 ±30 nm and 1550 ±60 nm. It is designed to meet Telecordia GR-1209-CORE and GR-1221-CORE standards and is aimed for use in ATM-PON.
Showa Electric Wire and Cable Co. Ltd., Tokyo, Japan
The 81663A group of distributed-feedback laser-source modules has power of +13 dBm for optical amplifier testing. The company's plug-and-play driver software allows full remote control of the modules, which are compatible with its other equipment. Up to 17 modules can be installed in a single mainframe, and the ITU grid at 100-GHz spacing in the C- and L-bands is covered.
Agilent Technologies, Palo Alto, CA
The ASP 500°C fiber oven for applications such as annealing, stabilizing, and curing is cleanroom-compatible and has programmable process temperature and cycle time. It is available in a variety of widths from 0.5 to 4 in. It comes with a removable fiber-holding fixture, pneumatic actuation, and cycle interrupt. The maximum temperature is 500°C.
American Specialty Products, Vernon, CT
Artifex 4.3 software allows users to model and simulate communications networks, switching architectures, protocols, and services. The upgrade has a new interface that allows execution of parametric runs and batch simulations. It includes a library browser for users to create their own libraries or manage third-party library components.
ARTIS Software, San Jose, CA
EDFA PUMP MODULE
A 980-nm laser pump module for erbium-doped fiber amplifiers is based on the company's microlens technology for coupling into output fiber. It has output powers of 50 to 120 mW. It comes in a hermetically sealed TO-can mount with a focusing optic and a fiber pigtail and can replace a circuit-board-mounted standard butterfly device.
Blue Sky Research, San Jose, CA
The ES model long-wavelength laser transceivers come in 1310- or 1550-nm versions based on Fabry-Perot or distributed feedback lasers. The serial data-only transceiver has two rows of five pins in a small-form factor LC-connector for OC-48/STM-16. The serial clock and data recovery transceiver has two rows of 10 pins for OC-48-STM-16.
E20 Communications, Calabasas, CA
The PowerExpress metro bidirectional optical amplifier supports 16 x 16 bidirectional transmission at OC-192. A single unit has a rack height of 1.73 in. Typical power consumption is 20 W and no enforced cooling system is required. A built-in dispersion compensator allows it to interoperate with different 10-Gbit/s transmission technologies and extend transmission distance to a maximum of 90 km.
Avanex, Fremont, CA
PureMode Er 1550C3 erbium-doped fiber can extend the bandwidth of a C-band erbium-doped fiber amplifier from 32 to 38 nm, increasing channel carrying capacity by 20%. It also has improved ripple performance to simplify amplifier design. It is manufactured through outside vapor deposition.
Corning Incorporated, Corning, NY
Single-mode terminators are designed for use on unused ports in systems where low return loss is critical. They eliminate unwanted reflected signals that can interfere with data flow and can damage equipment. They are available with -50 dB (PC), -55 dB (UPC), and -65 dB (APC) return-loss levels. They have zirconia ceramic ferrules, are Telecordia GR-326-CORE compliant, and have plug-in installation.
Storm Products Fiber Optics, Westmont, IL
The UNiPAK.10 is a highly integrated optoelectronic subsystem in a single footprint for intermediate and long-reach DWDM applications. It includes a 10-Gbit/s, 1.55-µm EML optical transmitter, a 10-Gbit/s PIN or APD optical receiver, and a 16-channel serializer/ deserializer. It has dither tone input, 12C external interface, and clock clean-up for SONET and FEC rates.
CENiX, Lehigh Valley, PA
OPTICAL SWITCH MODULE
A new 1 x 16 switch module takes its place in the LT-800 Series of optical switches offered by LIGHTech Fiberoptics. The LT-800 Series delivers rapid switching speeds (15 ms, typical) with industry-leading insertion loss (0.6 dB, typical) and low TDL. The new module features all fibers and control connections co-positioned on one end, allowing greater flexibility in board placement.
LIGHTech Fiberoptics, San Leandro, CA
AngströmBond AB9047 adhesive for bonding glass, ceramic, and silicon substrates is designed for optical applications in which shrinkage could disrupt alignment. It cures in less than 10 s with a 400-W lamp at any UV wavelength. The bond can be temperature-cycled from -60°C to 120°C without putting stress on dissimilar substrates.
Fiber Optic Center, New Bedford, MA
The MultiFilter line of interleavers includes models at 12.5, 25, 50, and 100 GHz. They operate passively with no temperature control and have flat and wide passbands, low crosstalk and high isolation between even and odd channels, low insertion loss, and no chromatic dispersion per mux/demux pair.
Arroyo Optics, Carlsbad, CA
METRO TDM SYSTEM
The FSP 1000 time-division-multiplexing system for metro areas aggregates eight applications onto a common 2.488-Gbit/s signal. It supports all protocols between 34 Mbit/s and 1.25 Gbit/s. The aggregate signal is SONET/SDH-compatible and can be connected directly over a single-mode-fiber pair or any selected 2.5-Gbit/s DWDM channel.
ADVA Optical Networking, Munich, Germany
Tra-Bond F175 is a UV-cured epoxy for fiberoptic terminations that can bond to metals, ceramics, and rigid polymers. The low-viscosity material has low shrinkage with low ionic impurities. It is resistant to humid environments and thermal cycling and cures in a few seconds.
Tra-Con, Bedford, MA
The OWA-9500 optical waveguide analyzer is a refractive index profiler for planar and arrayed waveguides. It provides refractive index measurements on glass and fused-silica-based devices made by optical components manufacturers for next-generation networks.
EXFO Electro-Optical Engineering, Quebec City, Que., Canada
A series of add/drop multiplexers are passive devices based on thin-film filters. They achieve 50-GHz bandwidths over telecommunications operating conditions without temperature compensation. They are available in standard ITU wavelengths with 1-, 2-, 4-, and 8-channel configurations. Dropped-channel residual isolation is better than -35 dB.
Alliance Fiber Optic Products, Sunnyvale, CA
The SpectraLinx Model 6923 coarse wavelength-division multiplexer is an all-fiber, bidirectional multiplexer/ demultiplexer link that allows four, five, or six channels to be stacked in the 1490- to 1610-nm region of optical fiber. The unit uses single-mode fiber, and FC/APC optical connectors are standard. It may be configured for unidirectional signal transmission.
Force, Christiansburg, VA
A multiport variable-optical-attenuator array is designed to provide gain equalization and dynamic saturation control of optical signals. It uses a polymer waveguide and can deliver more than 30 dB of dynamic attenuation while using less than 10 mW per port of drive power. No thermoelectric cooler is needed.
Gemfire, Palo Alto, CA
The E2000 connector has a full-metal protection shutter. It has insertion loss of <0.1 dB and a return loss of >85 dB. The assemblies are available with various cable types from 900-µm buffered fiber to 3.0-mm jacketed cable.
QPC Fiber Optic, San Clemente, CA
A series of ITU channel-grid DWDM devices has channel spacing of 100 GHz and is based on thin-film filter technology. They have reflect-channel insertion loss of 0.35 dB, high center-wavelength accuracy, and adjacent band isolation of larger than 25 dB. They cover standard odd and even ITU channels from 21 to 59.
HD FiberSystems, Santa Clara, CA
The Commutator is a fiberoptic switch based on acousto-optic technology. It uses vibrating crystals and sound waves to control light emissions. The device allows for 10-Gbit/s transmission and provides switching in microseconds. It can be inverted randomly, connecting any single line from the input array with the single output line.
Light Management Group, Burlington, Ont., Canada
A variable-optical-attenuator (VOA) multiplexer consists of 40 thermo-optic VOAs and one arrayed-waveguide-grating multiplexer and provides 100-GHz spacing in the C- and L-bands. It is remotely programmable at the transmit and add/drop ends of a DWDM network.
Lightwave Microsystems, San Jose, CA