ADVANTEST Q8347 Evaluates Optical Narrow-Band-Pass Filters For WDM
Optical Spectrum AnalyzerDescription of ADVANTEST Q8347- 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.
Also, the Q8347 is powerful for analyzing chirps from LDs and
Soliton transmission.
Feature: - Memory Function :16 Screens (Measured Data) with Battery Back
up 10 Screens (Measured Conditions) with Battery Back up Floppy
Disk (MS-DOS format 720 KB/1.2 MB)
- Display:Frequency, Super Impose, 3-D, Trend Monitoring (Power,
Wavelength) Division into 2 parts, Cursor Function, Corlor Display
Customization, Listing
- Input Connector :FC Connector (Internal Fiber:PC Rubbed, GI 50/125)
- Data Outpu:tGP-IB Equipped as Standard, Direct Plotter Output,
Built-in Printer (Printing Speed: 8 sec. or less)
Optical frequency can displayed - In addition to general wavelength display mode, a measured spectrum
can be displayed as optical frequencies. As light can be directly
read in units of THz, it is useful for measuring optical WDM and
chirps from LDs, and for analyzing Soliton transmission system.
Coherence analysis of ±165 mm - As the Q8347 uses a Michelson interferometer, the system is capable
of performing coherence analysis. This function allows easy
evaluation of noise suppression performance of LDs for optical
discs. Furthermore, the stroke of the interferometer can be greatly
increased to allow analysis to be made in a range of ±165 mm. Thus,
more detailed analysis can be mode, over and above the conventional
secondary maximum peak value (α value).
Curve fitting function - The Q8347 provides curve fitting with sech2 and Gaussian functions.
Thus, it is useful for spectrum analysis of Soliton transmission
system.
| Specifications | Mode | Normal Mode | High Resolution Mode | | Wevelength | Measurment Range | 0.35 to 1.75µm | | Max. Resolution | Approx. 0.1 nm/1.55µm
Approx. 0.05 nm/0.85µm | Approx. 0.01 nm/1.55µm
Approx. 0.003 nm/0.85µm | | Accuracy | ±0.1 nm or less | ±0.01 nm or less | | Span | 0.01 nm/DIV to 140 nm/DIV | | Level | Measurement Range
(Input Sensitivity) | 72 to +10 dBm (1.2 to 1.6 µm)
65 to +10 dBm (0.7 to 1.6 µm)
42 to +10 dBm (0.35 to 1.75 µm)
The minimum level is measured over a 50 nm span and averaging
16times | | Accuracy | ±1.0 dB (780 nm), ±0.7 dB (1310 nm. 1550 nm) input level –10 dBm | | Linearity(*1) | ±0.1 dB/-20 dB or less
±0.5 dB/-30 dB or less | | Dynamic Range(*2) | 35 dB or more (Value between peak and average display noise level) | | Repeatability including
Polarization Dependence(*3) | ±0.1 dB or less (23±5ºC) | | Scale | 0.2, 0.5, 1.0, 2.0, 5.0, 10.0 dB/DIV, and LINEAR | | Standard
Accesories | Power Cable | A01402 2 | | Fuse | EAWK4A/2A 2 each | | Interconnection Cable | 1 | | Printer Paper | 1 | | Floppy Disk | 3.5 inch 2DD 1 | | Instruction Manual | 1 |
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