Anritsu's 48Gbit/s MP1811A mux can perform 4:1 mux of a low-bit-rate signal into a 25–48Gbit/s signal when used with the MP1758A or MP1775A 12.5Gbit/s 4-channel pulse pattern generator and 69xxxB series signal generator.
The MP1812A demux supports Q-value measurement by setting the 0.001V-resolution threshold voltage of the high-accuracy input decision circuit. It can be integrated with the MP1776A to measure the error rate in 25–48Gbit/s signals.
External PC control (via GPIB) allows integration into BERT systems such as the ME7780A for 40G, FEC, and Super FEC data rates.
Santec Corp's IPM-8 and PM-8 are two complete eight-channel sub-module solutions that combine the electronics and communication interfaces with the photodetectors.
The IPM-8 has an integrated tap coupler for in-line power monitoring. The PM-8 is a terminated device.
The 1310–1610nm wavelength range, wide dynamic range and high-speed monitoring (taking less than 10ms for eight channels) enable a wide variety of applications. The package size is 27x36x10mm, with the option of ribbon fibre for low-cost metro systems.
Canoga Perkins says that it has successfully operated the 9125 Fibre Channel Xtender to make long-distance storage area networking (up to a distance of 50km) easy and reliable.
The Fibre Channel Xtender has a very small footprint and is offered as a stand-alone or rack-mounted device. The equipment can be used to extend the range of Fibre Channel applications cost-effectively.
ASIP Inc's first commercial product, the 10T101, is a 10Gbit/s, 1310nm Electro-absorption Modulated Laser (EML) which improves the quality and design margin of 10Gbit/s data links while eliminating thermoelectric coolers at a price competitive with direct-modulated lasers.
The initial version will support data rates up to 10.75Gbit/s and links up to 10km. Future versions will extend to 80km.
Unlike 10Gbit/s DMLs, it maintains high extinction ratio, wide bandwidth and very low jitter across 0–85°C. A Chip-on-Submount form-factor provides for an integrated monitor photodiode, thermistor and bias tee.
IPG Photonics' RAR Series discrete multi-wavelength pumped Raman amplifiers provide high-gain and low-noise amplification across the low-loss 1260–1700nm region with 50–100nm bandwidth.
A length of fibre internal to the pump unit provides stand-alone amplification for wavelengths not covered by EDFAs. No external transmission fibre is needed.
Telecom-grade ytterbium- or neodimium-doped fibre lasers form the pump source. Polarisation-scrambled output reduces polarisation selective gain.
For OC-768-based 40Gbit/s networks Oki Optical Components has introduced the following products:
- The KGM8010 module, a general-purpose broadband amplifier with integrated bias tee for output DC bias adjustment plus 2.4mm input/output connectors. It provides a complete single-power-supply small-form-factor driver package with a frequency range of 100kHz to 45GHz, gain of 18dB, and power consumption of 0.76W. Applications include use as a baseband amplifier, optical modulator, and in high-speed test instruments.
- The KGA8010 die is a broadband distributed amplifier that uses gallium arsenide and coplanar waveguide technologies and operates at more than 50GHz. Gain is 11.5dB and output power 12dBm. Applications include pre-amplifiers, baseband amplifiers and EAM drivers.
ITF Optical Technologies' second-generation All-Fiber Optical DPSK Demodulator features phase tunability, allowing adjustment to the incoming signal frequency and accelerating the R&D of new systems based on coherent modulation schemes.
Changing DWDM modulation technique from OOK to DPSK allows intrinsic reduction of signal-to-noise ratio and a reduction of sensitivity to fibre dispersion.
Only one device is needed to cover any channel in C and L bands; only the bit rate needs to be specified.
Agilent Technologies' HDMP-3268 non-blocking digital crosspoint switch IC is a 68x68-port device for routing data in high-performance core network equipment. Each channel supports speeds up to 3.2Gbit/s, giving throughput of over 200Gbit/s. With the HFBR-712BP transmitter and -722BP receiver 12-channel parallel optics modules, it comprises a full data-path solution for switch fabrics up to 2048x2048. www.agilent.com
Multilink Technology Corp is shipping the 18x18mm BGA-packaged MTC5534 Micro-Module.
The device is Multilink's first 10.7–12.5Gbit/s Electrical Return-to-Zero (ERZ) Modulator Driver, a precision low-jitter (5ps p-p typical) LiNbO3 modulator driver for generating optical RZ (return-to-zero) signals with performance equal to that from two-stage generators. It cuts component count and increases line-card density, reducing the effort, size and cost to about that of an NRZ (non-return-to-zero) line-card.
Pin-out compatibility with Multilink's NRZ Micro-Modules enables reuse of NRZ line-card designs with minimal modifications for RZ.
Fluke Networks' OptiFiber is the first field OTDR to integrate loss/length certification, auto OTDR analysis and end-face inspection for Gigabit, 10 Gigabit and higher-speed applications.
In addition to the DSP-FTA and OMNIFiber adapter, OptiFiber adds features for testing fibre in premise networks. Multimode modules feature short event deadzones to pin-point events spaced as closely as 1m apart. ChannelMap automatically generates a visual representation of the entire channel across the campus, including all patch cords and connectors. An optional video microscope allows connectorised fibre end-faces to be inspected, graded and documented.
Micron Optics' advance in fibre Fabry–Perot tunable filter design has generated wider free spectral range (to 200nm at 1.55mm), high finesse (>7000), and low loss (<3db).
The latest improvements enable extended S-, C- and L-band applications for all product lines. These include filter components for noise filtering and channel de-multiplexing, optical channel analyser modules for wavelength division multiplexing system performance monitoring, and dynamic swept-laser component test instruments for in-process characterisation, control, and test in optical operations.
ficonTEC's PosMaster uses high-precision positioning equipment for fibre–fibre, fibre–laser diode, and fibre–waveguide alignment.
The high modularity and the reconfigurable design of the DAQ system enable fast and flexible set-up. Eight-channel array alignments are possible in less than 4 seconds.
The systems can also be tailored to specific customer requirements and tested in ficonTEC's application centre.
Enterasys Networks has four new Packet-Over-SONET (POS)/SDH modules which further broaden its X-Pedition series of modular Layer 3-7 routers, which includes Gigabit Ethernet, Fast Ethernet, ATM/OC-3, WAN (HSSI), WAN (serial) and FDDI. The modules expand the WAN and optical technology offerings in Enterasys' flagship ER16 router.
The four new modules include:
- the ER16-POS21-04 (four OC-3c/STM-1 multi-mode fibre, MT-RJ interfaces);
- the ER16-POS29-04 (four OC-3c/STM-1 single-mode fibre-IR, MT-RJ interfaces);
- the ER16-POS31-02 (two OC-12c/STM-4 multi-mode fibre, SC interfaces);
- the ER16-POS39-02 (two OC-12c/STM-4 single-mode fibre-IR, SC interfaces).
The purpose of a Packet-Over-SONET (POS)/SDH edge solution is to connect enterprise local area networks (LANs) to high-speed metro-area networks and optical carrier networks.
K2 Optronics' EC48 Series of 2.5Gbit/s SONET/SDH-compliant, directly modulated DWDM transmission lasers for metro, extended-reach, and long-haul markets have powers of 2 and 5mW (peak) and reach of 200, 400 and 650km. They cover channels at 100GHz spacing across the entire C band. A 50GHz version will be available in Q1/2003.
Narrow dynamic spectral linewidth and centre wavelength stability eliminate wavelength lockers.
Cypress Semiconductor has begun to sample the POSIC10GLAN (CY7C9548-FAC), a LAN PHY IC in a 624-pin BGA package.
The device enables geographically dispersed enterprise backbones and data centres to send 10 Gigabit Ethernet (10GbE) directly over fibre up to a distance of 40km.
The IC also enables the longest round-trip connection of any LAN PHY (20km under worst-case conditions). This enables enterprises to progress to 10GbE fibre networks from asynchronous transfer mode (ATM) and Gigabit Ethernet backbones.
Large buffers enable efficient network flow control, maintaining data integrity with no packet loss under increasing network congestion.
Cypress says that the POSIC10GLAN supports industry-standard interfaces with 10GbE 16-bit interface (XSBI) on the line-side and system packet interface (SPI-4.2) on the system side.
Lumics' 140mW LU0980M1402 coolerless 980nm pump laser modules use a Mini-DIL package platform (7×13mm by up to 5mm high) to operate without a thermoelectric cooler over 0–70ºC. Performance is maintained by fibre Bragg grating wavelength locking.
Use in fibre amplifiers in high-speed networks reduces the size and power consumption of EDFAs in metro and long-haul systems.
The 4334TA high-gain, low-noise TIA from Inphi Inc and the waveguide-integrated PIN photodiode from u2t Photonics have been combined to yield the single-package high-input-sensitivity XPRV2021 photoreceiver for OC-768 40Gbit/s applications.
The module has an optical-to-electrical bandwidth of 43GHz, which can be post-filtered, and is suitable for both non-return-to-zero (NRZ) and return-to-zero (RZ) applications. For NRZ, the module has input sensitivity better than –10dBm while maintaining a BER of 10-9 and can handle high input power levels. It operates off a +3.3V supply and dissipates less than 200mW.
APA Optics has launched a new range of passive components based on planar waveguide, fibre and thin-film coating technologies.
The new range complements the company's bulk optics based dense wavelength division multiplexing (DWDM) components.
APA Optics is also redesigning its family of DWDM components for both lower cost and reduced size while maintaining their passive athermal, low-insertion-loss performance.
The company says it has also developed a method for hermetically sealing the DWDM package, as required for reliability in humidity aging. This is a key requirement of Telcordia's GR-1209-CORE and GR-1221-CORE standards.
Building on its Mics line of DWDM mux/demuxes, NetTest's bulk-grating-based Mics Platinum has insertion loss of 2.5dB for the Gaussian option and 4.5dB for the FlatTop option. Uniformity is 1dB for 16 channels and 1.5dB for 40 channels.
Improved athermal design means that no temperature regulation is needed, reducing design and operational costs in large channel count systems, while giving reduced thickness and adapted footprint of the packaging.
Also, built on NetTest's multi-purpose bulk-optics platform and using liquid crystal technology, the new DynaMics Channel Equalizer enables accurate, remote and independent control of the amplitude of each network channel.
Digital Lightwave's new series of optical design and manufacturing test instruments includes:
- the Dynamic Component Test System (DCTS), to analyse devices within a wavelength range, collect critical data, and display the results (a 200ms continuous sweep allows real-time feedback during production).
- the portable Mini-DCTS;
- the WDM Channel Simulator (WCS), to replace bulky, complex and difficult-to-operate multiple-laser systems;
- the Laptop Optical Channel Analyzer (LT-OCA), to analyse DWDM signals;
- the Automatic Channel Locking Filter (ACLF), to isolate and track a transmission channel with automatic scan-and-lock circuitry.
Analog Devices Inc's ADN8810 device is the first fully integrated, single-chip programmable precision current source for tunable lasers.
By scaling full-scale output current, it can drive different laser sections. A precision current can be written through a 12-bit digital-to-analogue converter while interfacing to the host system over a serial interface.
The ADN2820 TIA is optimised for OC-192 and 10 Gigabit Ethernet metro access. Featuring high gain, low input noise, and functionality typically found in post-amplifier ICs, the TIA can directly drive a CDR IC or transceiver, eliminating external post-amplifiers in most short-reach/intermediate-reach optical modules.
The single-chip AD8305 logarithmic converter delivers high-accuracy optical power measurement (e.g. photodiode current over a 100dB dynamic range).
Agere Systems' TSOT1610G multi-rate, multi-channel framer/pointer processor is its first second-generation integrated circuit for SONET/SDH framing in high-speed access and metro optical networks.
The IC is able to aggregate multiple data-rate signals and perform traffic management functions simultaneously. The device fully supports 16 channels of SONET/SDH OC-3/STM-1 (155Mbit/s), 16 channels of OC-12/STM-4 (622Mbit/s), four channels of OC-48/STM-16 (2.5Gbit/s) or a single OC-192/STM-64 (10Gbit/s).
The framer/mapper also features built-in bi-directional 10Gbit/s grooming switches, dual 4×2.5Gbit/s and dual 16x622Mbit/s backplane interfaces, a secondary SFI-4 optics interface, and flexible transport overhead transparency.
Also, the device supports SDH features such as tandem connection monitoring, B1 and B3 block error monitoring, SS-bit provisioning and SS-bit overwriting (for SONET/SDH bridge applications).
OpsiTech's 8-, 10-, 12-port electrically tunable variable optical attenuator (EVOA) arrays are based on integrated silica-on-silicon planar technology. They have 20dB of attenuation, high stability, low insertion loss, low polarisation-dependent loss and small footprint. Available for C and L bands, the arrays are applied in modules such as mux/demux, OADMs and EDFAs.
The arrays ensure the dynamic rebalancing of each individual optical channel, correct aging effects of other components, and avoid distortions due to saturation.
PMC-Sierra says its PM5332 SPECTRA 1x2488 is the highest-density, multi-rate SONET/SDH framer for single-channel OC-48/STM-16 or four-port channelised OC-12/STM-4 interfaces.
The device is claimed to be the first fully STS-1/AU-3 channelised framer with integrated multi-rate CDR and synthesis, replacing up to five discrete devices. The small-footprint device enables easy and efficient upgrade of line-cards for multiple transport operating modes.
Ulm Photonics is sampling 2D VCSEL arrays designed for bottom emission at 850nm, flip-chip soldering onto silicon CMOS circuits and modulation speeds up to 5Gbit/s per channel. Excellent lifetime data is enabled by reducing the thermal resistance and the dissipated power of the flip-chip mounted laser chips.
The standard configuration features nxm array formats (such as 1×12, 3×12, 8×8), separate p- and common n-contacts and 50µm-diameter solder bumps in a 250×250µm unit cell.
Agere Systems has expanded its family of clock driver chips to include the low-power models LCK4972, LCK4973, LCK4973V and LCK4310.
By reducing the voltage from 3.3V to 2.5V, power can be cut by 30%. This reduces electronics system costs and improves voice and data electrical signal integrity, predictability, and reliability for equipment including high- and mid-range computer servers and workstations, switches, routers, and networking systems.
The new chips also have better jitter, skew, cost and speed (frequency) performance, translating to lower-cost, higher-performance,, faster and more reliable equipment.
Fitel's 10Gbit/s tunable transponder integrates wavelength tunability over eight channels and a wavelength locker for 50GHz spacing into a 89x114.3x13.5mm body.
The transponder reduces wavelength-dependent component count by a factor of eight, so it provides cost savings for the equipment manufacture's inventory and the operator's maintenance.
The Electronic Device Group of Mitsubishi Electric has launched two new 980nm ridge-wavelength pump laser diodes intended for pumping EDFAs.
The ML861E5S has a peak power output of 1100mW with a small laser beam aspect ratio for long-distance DWDM but without the danger of catastrophic optical damage.
The uncooled ML8627S offers a stable wavelength in metro-area networks throughout a wide operating temperature range.
Comlase has developed a high-power 980nm chip-on-carrier pump laser output up to 1W in single-mode applications.
Other products include a new cooled 980nm pump laser in a butterfly package, and uncooled mini-DIL pump lasers for low- to medium-power applications.
Multiplex Inc is sampling the RP192 avalanche photodiode (APD) receiver, for volume production by end-2002 in 10 and 12.5Gbit/s, digital and analogue versions. Sensitivity is typically –26dBm at a bit-error-rate of 10-12 and bandwidth is >8GHz.
The APD is based on a highly reliable platform that uses planar technology rather than mesa technology.
Small-form butterfly packaging of the RP192 APD receiver has unique ground–signal–ground–signal–ground differential outputs. Next-generation models will have packaging based on the surface-mount receiver MSA specifications.
Multiplex says that the RP192 will enable it to produce a true LR2 (80km) transponder to meet Telcordia's GR-253 specifications.
JDS Uniphase's new 10Gbit/s modulator with optional chirp has an integrated photodiode but is only 65×12×5mm — 50% smaller than previous models.
Intended for metropolitan and long-reach applications, the modulator operates over the entire band (wavelength-independent), offering reductions in sparing requirements and compatibility with tunable lasers.