OSA: Optimization of Optical Modulator Bias Voltage

An optical modulator is a key device indispensable for optical communication  that transforms the properties of light such as wavelength, intensity, and phase  with electrical signals.

Typical optical modulators such as LN (Lithium Niobate) modulators, Mach-  Zehnder modulators, and EA (Electro-absorption) modulators require the  optimization of bias voltages.

If the bias voltage is improperly adjusted, abnormal spectral peaks may occur  and degrade optical communications. To detect abnormal spectral peaks, an  OSA with high resolution and dynamic range is required in order to effectively  separate the side lobes. The measurement speed of the OSA is also important.  Because the bias voltage needs to be adjusted while checking the intensity of  the abnormal spectral peaks.

Abnormal spectral peaks and side lobes can be clearly separated during bias voltage adjustment.

ŸFast sweep

The "RAPID" sensitivity mode’s high speed makes the AQ6380 ideal for bias

voltage adjustment while checking the intensity of abnormal spectral peaks.

O-band, C-band, and other bands are used for modulators. A single AQ6380

can cover all those bands.