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Advantest Introduces Industry's First Two-in-one Laser Diode Test System for Both L-I and Transmission Characterization
July 15, 2002
Advantest Introduces Industry's First Two-in-one Laser Diode Test System for Both L-I and Transmission Characterization
TOKYO, Japan, July 17, 2002 - Advantest Corporation (TSE: 6857, NYSE: ATE) introduced today to their customers in Asia the Q8611 Laser Diode Test System for R&D and production line testing of laser diodes-the semiconductor devices used to transmit signals in fiber-optic communication systems. In addition to the ability to test the laser diode's optical output and electrical characteristics, the Q8611 also includes the ability to measure the transmission characteristics of up to 12.5Gbps signals. By providing a "one-box solution" for these two types of testing, an industry first, the Q8611 will allow Advantest's customers to achieve maximum efficiency from their investments in capital equipment.

Advantest will display the Q8611 at InterOpt2002, a four-day exhibition on the latest in optoelectronic technologies to be held from July 16th to the 19th at the Makuhari Messe convention center in Chiba Prefecture, Japan.

With much of the Internet's backbone already in place, new high-speed networks such as metropolitan area networks, Gigabit Ethernets, and fiber-to-the-home are being established to help bring broadband access directly to the user. And, with the relentless evolution of new telecommunication technologies such as dense wavelength division multiplexing (DWDM) and coarse wavelength division multiplexing (CWDM), this growth in bandwidth will only continue to accelerate.

In order to ensure a timely roll-out of such broadband networks, however, it is essential that manufacturers of telecom equipment are able to obtain high-performance laser diodes at an economically-viable price range. Currently, using a standard laser diode test system, the first step in the testing process of these devices usually involves measuring light-versus-current (L-I) and other key characteristics. When testing laser diodes made for use in fiber-optic communication systems, however, manufacturers must also measure the device's transmission characteristics, forcing them to invest in additional test equipment such as bit error rate and chirp test systems. Thus, given the current difficult economic environment, laser diode manufacturers are eagerly anticipating the arrival of new testing solutions that can lower their total test costs while maintaining high product quality.

The Q8611 fulfills both these needs by providing in one unit the ability to measure not only L-I and other key laser diode characteristics, but also transmission characteristics such as bit error rate and chirp. And, because Advantest has readied a variety of easily connectable test fixtures to interface the Q8611 with the device under test, the Q8611 can be quickly modified for testing of a wide array of different device packages such as chip carriers and high pin-count transceiver modules. Through such efforts to provide increased testing versatility, the Q8611 will help its users to maximize the efficiency of their test equipment purchases.

The Q8611 can measure electrical currents of up to 2A and optical outputs of up to 400mW, allowing it to perform L-I characterization of both standard and high-output laser diodes. Similarly, because it can measure the bit error rates and chirp of up to 12.5Gbps signals, the Q8611 is capable of measuring every laser diode currently being used in existing high-speed optical networks.

Furthermore, the Q8611 comes with user-friendly software that enables the operator to add or alter new testing operations and establish their own unique test sequences and test conditions. The Q8611 also comes with a number of options such as the ability to measure waveform characteristics or specify up to three separate operating temperature subdivisions (essential for testing of DWDM laser diodes because of the high susceptibility of their wavelengths to the laser's operating temperature).

Main Specifications
Drive Current (max.):
2A
Maximum Optical Power (when measuring L-I):
400mW
Controllable Temperature Range:
20 to 75 degrees C (expandable w/option)
Maximum Data Rate:
12.5 Gbps

General specifications:

Power:
Three-phase 200V 30A 50/60Hz
Operating Environment:
Ambient Temperature: -20 to 30 degrees C
Relative Humidity: -65% or less
Dimensions (basic configuration):
Approx. 800 (W) X 1600 (H) x 80 (D)
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