Advantest Q8381A
Advantest Q8381A Optical Spectrum Analyzer
Description
Advantest Q8381A optical specturm analyzer can analyze a accommodating measurements on display LEDs and optical devices for communication.
In addition, Advantest’s unique technology realizes low polarization dependence and a high level measurement accuracy of ± 1.5dB.
In addition to the automatic optimum measurement condition setting, automatic peak search and half value width measurement functions, this unit mounts the pulse light measuring function, power monitoring function and luminosity compensation display functions for improvement of operation and analysis capabilities.
To date, the spectrum of a pulse-modulated optical signal was measured after averaging. However, the measured spectrum may be lower than the actual light-emitting level or data missing may occur. To solve this problem, the Q8381A provides two measurement modes: PULSE sweep mode and GATED MEAS mode.
When analyzing beam light using an optical spectrum analyzer, coupling to optical fiber is required. With the conventional method, the beam light is fed to the analyzer while monitoring the coupling condition using an optical power meter. The Q8381A’s power monitor function can be used in the same manner as the optical power meter.
By minimizing the ambient light level, the Q8381A achieves a wide dynamic range of 40 dB at 1 nm and 50 dB at 5 nm from the peak wavelength. This level of performance is ideal for measurement on the side-mode suppression ratio of DFB laser diodes.
Key Points
Wide Wavelength Range
Low Polarization Dependence
High Input Sensitivity
Unique Pulse Light Measurement Function
Power Monitoring Function
Versatile Memory Function
Wide Wavelength Measurement with High Sensitivity
High Measurement Speed
Low Polarization Dependence Ensures High-Accuracy Level Measurements
Accurate Pulse Light Measurement
Power Monitoring Function
Wide Dynamic Range Measurement
Specifications
Wavelength: Measurement range - 0.35 to 1.75 micro m, Resolution: 0.1, 0.2, 0.5, 1.0, 2.0, 5.0 nm
Repeatability: 0.1 nm or less (during one-minute repetitive sweep)
Level: Measurement range(input sensitivity): -85 to +10 dBm (1.1 to 1.6 micro m), -75 to +10 dBm (0.7 to 1.6 micro m), -70 to +10 dBm (0.4 to 1.65 micro m), -60 to +10 dBm (0.35 to 1.75 micro m)
Polarization dependence: ±0.1 dB or less
Accuracy: ±1.5 dB or less (at wavelength of 0.633, 1.31, and 1.55 micro m)
Linearity: ±0.5/20 dB, ±1.0/40 dB
Scale 0.2, 0.5, 1.0, 2.0, 5.0, and 10.0 dB/DIV and linear
Dynamic range: 40 dB or more (with ±1 nm level difference from peak wavelength), 50 dB or more (with ±5 nm level difference from peak wavelength)
Sweep Span: 0.1 nm to 140 nm/DIV and zero
Sweep Measurement time: 0.8 sec or less (with a span of 200 nm or less), 1.5 sec or less (with a span of 500 nm or less)
Optical input: FC-type connector
Data output: General-purpose interface bus (GPIB) (IEEE488-1978), Built-in printer (with a print speed of 8 s or less, standard), Direct plotter output
Operating Temperature: +10 to +40°C, Relative humidity - 85% or less
Storage Temperature: -10 to +50°C, Relative humidity: 90% or less
Power Supply: 90 to 250 VAC, 48 to 66 Hz, 180 VA or less
Dimensions Approx.: 424mm W X 221mm H X 450mm D
Mass: 29 kg maximum
