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Description

Q8326 is a digital optical wavelength meter (Advantest) featuring high resolution of the central wavelength. It is suitable for laser diodes, LEDs and other narrowband light sources. Its high measurement accuracy and resolution are ensured over an extremely long period of time by the built-in HeNe reference laser.

     The light is coupled in by means of optical fiber. An analog level meter is provided to facilitate alignment of the optical axis, if the light has to be fed into the optical fiber first. Thanks to its high accuracy, Q8326 can be used as a calibration standard for spectroscopes; it allows tuning of dye lasers. It can also be used for investigating the wavelength characteristics of semiconductor components.

     The high resolution allows for instance accurate measurement of the temperature and chirp response of laser diodes in case of WDM modulation. The instrument always displays the measured wavelength as a value in a vacuum, thus eliminating measurement errors due to the variable refraction index of the air. With 5 measurements per second, the instrument allows realtime observation of wavelength fluctuations. Intensity-modulated light can be accurately measured with a modulation frequency of 3 MHz or higher.

Specifications Wavelength Range 480nm to 1650nm Input Sensitivity -30dBm (1200nm to 1600nm) -25dBm (600nm to 1650nm) Max. Input Level Max. Input Level +10dBm Display 10 Digits, Wavelength or Frequency Resolution 1/0.1/0.01/0.001+0.0001nm or 100/10/1GHz/100MHz/10MHz, Automatic Optimization Measurement Rate 5 Measurements per Second Analog Output D/A Conversion From 0 to 1V for Last Three Digits of Display Optical Connector FC/PC with Internal 50/125mm Graded-index Fiber, SG or ST Connector Adaptable Dimensions (W x H x D) 300 mm x 132 mm x 450 mm