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Advantest
Introduces the Q7607 Chirp Test Set
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Fast
Evaluation of the Transmission Characteristics of
Optical Pulses with Data Rates of Up to
50Gbps
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Q7607
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TOKYO, Japan, March 7th, 2002 --
Advantest Corporation (TSE: 6857, NYSE: ATE) has
announced today that it has begun sales of its Q7607
Chirp Test Set, which addresses the new testing
challenges presented by broadband, high-speed
telecommunication networks. As telecommunication
networks such as digital subscriber lines and 3G
wireless networks continue to both grow in capacity and
attain faster data rates, it becomes increasingly vital
to ensure that chirp (the slight shifts in wavelength
that occur when lasers rapidly emit optical pulses) does
not interfere with signal quality. The Q7607 is a
dedicated chirp test solution that has the ability to
test optical pulses with data rates of up to 50Gbps
within a dramatically reduced measurement time of less
than 30 seconds.
Having already successfully
introduced the current generation of 10Gbps DWDM (Dense
Wavelength Division Multiplexing) systems, optical
engineers are already hard at work developing
next-generation, 40Gbps systems. The faster these data
rates get, however, the greater the chance that
dispersion and chirping will reduce signal strength and
thus cut short transmission distances. Therefore, to
properly adjust for these factors, it is vital that the
designers of DWDM systems be able to accurately
determine the path and frequency fluctuations of the
optical pulses being emitted.
To help DWDM
designers bring 40Gbps systems to market, the Q7607
incorporates several new features that slash measurement
times while improving measurement accuracy. For example,
along with its ability to measure the chirp of pulses
transmitting at 10Gbps-a function inherited from the
company's previous offering-the Q7607 has the added
ability to test optical pulses traveling at speeds of up
to 50Gbps. And, to ensure that the chirp of such
high-speed optical pulses are measured precisely, the
Q7607 possesses an expanded demodulation bandwidth of
100GHz and a new interferometer that has a wide, 300GHz
free spectral range. Moreover, through the use of
Advantest's unique interferometric method for deriving
frequency-modulation (FM) and intensity-modulation (IM)
components, chirp measurement times have been
dramatically reduced to 30 seconds or less.
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addition to its high-end interferometer, the Q7607 also
comes equipped with an interferometer optimized for
10Gbps testing, making it possible for engineers to
switch between testing of 10 or 40Gbps pulses with the
touch of a single key. Another improvement that will
help ease the burden of testing is the Q7607's optional
built-in optical amplifier, which covers both C-band
(1,530nm to 1,570nm) and L-band (1,570nm to 1,610nm)
optical frequencies and automatically adjusts its gain.
Previously, when using an external amplifier it was
necessary to make complicated adjustments to its optical
output power and optical gain. Choosing this option,
however, completely eliminates the need to make such
adjustments. By instilling the Q7607 with such high
usability, the Q7607 can thus also be used as an
efficient solution for manufacturing line
testing. | |
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Measurable Wavelength
Range:
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1,510nm to 1,610nm
(Q7607)
1,530nm to 1,610nm (Q7607 + optional amplifier)
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Input Optical Power
Range:
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-10dBm to +10dBm
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Free Spectral Range
(50Gbps):
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300GHz +/-15GHz
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Frequency Conversion
Accuracy:
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Within +/-15%
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Demodulation Bandwidth
(50Gbps):
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100Hz to 100GHz
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Insertion Loss:
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13dB or less
(Q7607)
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Optical Output
Power:
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-3dBm to 0dBm (Q7607 + optional
amplifier)
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Measurement Time:
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0.5s (Interval between
consecutive measurements)
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| General Specifications: |
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Dimensions - Approx. 424mm
(width) x 132mm (height) x 500mm (depth) Mass - Approx.13kg or
less
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The
specifications listed above are for a temperature of
23,+/-5 | |
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