Advantest Q8347
Advantest Q8374 Optical Spectrum Analyzer
Description
The Q8347 spectrum analyzer enhanced the performance of spectrum analyzer employing a Fourier spectrum system with a Michelson interferometer.
The Q8347 achieves wavelength resolution of 0.01 nm and wavelength accuracy of 0.01 nm (resolution of 1 GHz and accuracy of 1 GHz in optical frequency mode) at the 1550 nm spectrum band.
In addition, the Q8347 is capable of accurately measuring the each wavelength of optical wavelength division multiplexing (WDM) transmission signal by separating the spectrums.
It is especially suitable for evaluating characteristics of optical narrow-band-pass filters used for WDM like AWG and Fiber gratings. A measured spectrum can be displayed as optical frequencies.
The Q8347 is capable of performing coherence analysis as it uses Michelson interferometer and it provides curve fitting with sech and Gaussian functions. Peak values of spectrum or coherence data can be displayed as numerical data containing up to 200 points.
The Q8347 system is equipped with high-speed thermal printer capable of copying the display in 8 seconds. A floppy disk drive, which uses MS-DOS, allows easy data storage and analysis.
The Q8347 uses a Michelson interferometer to employ the Fourier spectrum system. The optical spectrum can be obtained by performing Fast Fourier Transform (FFT) over the interferogram.
Peak values of spectrum or coherence data can be displayed as numerical data containing up to 200 points.
As a system with high-power, wide-band light source such as spontaneous emission light of EDFA or edge-emitting LED, the Q8347 accurately measures the transmission
characteristics of optical narrow-band-pass filters employed for EDFA systems at the accuracy ±0.01 nm. In measuring a filter with spectral-width of 1 nm, dynamic range is 35 dB (Averaging 16 times). Linearity at the level 30 dB down from the central wavelength is ±0.5 dB or less.
Key Points
High Resolution
High wavelength accuracy
High speed measurement
±165 mm Coherence analysis range
Optical frequency display
List display
Trend Monitoring Function
Specifications
Wavelength: 0.35 to 1.75 micro m.
Maximum Resolution: Approx. 0.1 nm/1.55 micro m, Approx. 0.05 nm/0.85 micro m
Accuracy: ±0.1 nm or less
Span: 0.01 nm/DIV to 140 nm/DIV
Measurement Range: -72 to + 10 dBm(1.2 to 1.6 micro m), -65 to + 10 dBm(0.7 to 1.6 micro m), -52 to + 10 dBm(0.45 to 1.7 micro m), -42 to + 10 dBm(0.35 to 1.75 micro m)
Accuracy: ±1.0 dB(780 nm), ±0.7 dB(1310nm, 1550 nm) input level -10 dBm
Linearity: ±0.1 dB/-20 dB or less, ±0.5 dB/-30 dB or less
Dynamic Range: 35 dB or move (value between peak and average display noise level)
Repeatability including Polarization Dependence: ±0.1 dB or less (23 ± 5 deg C)
Operating Temperature: +10 to +40 deg C, RH 85% or less
Storage Temperature: -10 to +50 deg C, RH 90% or less
Power: Main Unit - AC 100 to 120 V/220 to 240 V, 48 to 66 Hz, 180 VA or less, Optical Unit - AC 100 to 120 V/220 to 240 V, 48 to 66 Hz, 80 VA or less
Dimensions:Main Unit - Approx. 424mm W X 221mm H X 500mm D, Optical Unit - Approx. 424mm W X 132mm H X 500mm D
Mass: Main Unit - 16 kg or less, Optical Unit - 20 kg or less
