OFC technical sessions feature test and measurement
OFC/NFOEC, Anaheim Convention Center, Anaheim, CA, Optical Society of America. www.ofcnfoec.org.
Staff -- Test & Measurement World, 5/1/2007 2:00:00 AM
During an OFC/NFOEC technical session on optical test and measurement, Wolfgang Moench of JDSU described a measurement technique that he says will change the way engineers measure OSNR in optical receivers. His presentation, “Measuring the Optical Signal-to-Noise Ratio in Agile Optical Networks,” resulted in a lively discussion about measurement techniques.
| For more coverage of OFC/NFOEC, including links to vendors’ Web sites, see www.tmworld.com/ofcnfoec_2007 . |
The next presentation, “Fault Location for Branched Optical Fiber Networks Based on OFDR Technique Using FSF Laser as Light Source,” Nianyu Zou described a technique for finding faults in fiber-optic cables using the frequency domain, or OFDR, using a frequency-shifted feedback laser. Norman Swensen of ClariPhy Communications followed with details of testing components of IEEE 802.3aq (10GBASE-LRM) in “Standards Compliance Testing of Optical Transmitters Using a Software-Based Equalizing Reference Receiver.”
ON THE EXHIBIT FLOOR
Anritsu introduced a Universal Transport Analysis (UTA) module for its CMA 5000 multilayer test instrument. The UTA module lets you test 10-Gbps optical networks. Anritsu also introduced the MT9820A optical-component tester that lets you perform optical-loss measurements by controlling up to four tunable laser sources. EXFO introduced its FastReporter software that gathers measurements from the company’s portable optical-network testers for engineers to analyze and report. The company also introduced the AXS-110 optical time-domain reflectometer (OTDR) for testing access networks and enterprise networks.
LeCroy introduced Eye Doctor software for its digital oscilloscopes that performs simulation of signals. You can use Eye Doctor to simulate how a signal will look at the end of a transmission channel based on signal measurements at the transmitter and on the channel’s design specifications. Apex Technologies displayed the AP2440A series of optical spectrum analyzers. The AP2440A measures both optical power and phase, which you can use to measure chirps and pulses in the frequency domain.
SyntheSys Research announced two additions to its BertScope line of bit-error rate testers (BERTs) and eye-diagram analyzers. The BertScope CRJ 12500A adds clock recovery and jitter analysis to the BertScope. The unit lets you measure the spectral components of jitter from 200 Hz to 90 MHz. The company also announced the BertScope LRM optical test system. The add-on lets you test transmitters and receivers for use in long-reach multimode applications, or IEEE 802.3aq networks.
Centellax demonstrated its 40-Gbps BERT system. It consists of a 40-Gbps PRBS pattern generator, a demultiplexer, a 40-GHz divider, a 50-GHz amplifier, a 40-Gbps amplifier, and at least one 10-Gbps BERT. Luna Technologies announced the OBR 4400 Optical Backscatter Reflectometer, a high resolution OTDR. The instrument lets you diagnose fiber-optic components and assemblies such as splices, breaks, connectors, and bends.
Agilent Technologies introduced two instruments designed to streamline optical measurements. The N4917A optical receiver stress test set tests optical receivers at data rates up to 12.5 Gbps. The instrument produces calibrated transmission streams with known, adjustable eye openings. The N4376B lightwave component analyzer eases the setup involved in characterizing components at 850-nm wavelengths. It can produce and capture optical or electrical signals. The instrument cuts test setup time and provides repeatable measurements.
JDSU introduced the OTU-8000, a rack-mounted instrument for remote testing of fiber networks from FTTx to long haul. The unit holds two OTDR modules that let network operators find faults in deployed cables. The company also introduced the Optical Component Environmental Test System (OCETS) that can test FTTx components such as splitters. Yokogawa introduced a firmware upgrade and remote-control software for the AQ7270 OTDR and a 40-Gbps differential quadrature phase-shift-keying optical transmission module.
| For more coverage of OFC/NFOEC, including links to vendors’ Web sites, see www.tmworld.com/ofcnfoec_2007. |
No related content found.
- 0 rated items found.
Datasheets.com Electronic Parts & Inventory Search
185 million searchable parts
- Part Number
- Description
- Inventory
- Products
- Manufacturers
View All Webcasts
