How to Perform Photonics IC Functional Test

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Essential Benchtop Source Measure Units
+ Essential Benchtop Source Measure Units
Essential Benchtop Source Measure Units
+ Essential Benchtop Source Measure Units

Test PIC Optical Electrical Performance

Photonic integrated circuit functional test requires a synchronized measurement workflow that combines optical stimulus, polarization control, optical power measurement, and electrical characterization. A typical test setup uses a tunable laser source to sweep wavelength across the device under test, an automated polarization controller to apply defined polarization states, an optical power meter to measure transmitted or coupled optical power, and a source measurement unit to bias active devices and measure generated current. This allows passive structures such as waveguides, grating couplers, filters, and resonators to be evaluated in the same workflow as active components such as PIN photodiodes.

During the test, the wavelength sweep captures insertion loss, spectral features, bandwidth behavior, and resonance response across the target optical range. Polarization-resolved measurements add visibility into transverse electric and transverse magnetic behavior, including polarization dependent loss and alignment sensitivity. For active device validation, optical input is applied to the on-chip photodiode while the source measurement unit records current under operating or bias conditions, enabling responsivity and dark current analysis. Automating these measurements in a single sequence reduces manual setup changes and helps keep optical and electrical results correlated across the full photonic integrated circuit test flow.

Photonics IC Test Solution

Performing photonics integrated circuit functional test requires a synchronized workflow that combines swept optical stimulus, polarization control, optical power measurement, and electrical characterization. The solution uses a tunable laser to sweep wavelength, a polarization control and measurement instrument to cycle through defined polarization states, an optical power meter to measure optical response, and a source measurement unit to record current from active devices such as PIN photodiodes. This configuration supports insertion loss, polarization dependent loss, responsivity, and dark current measurements in a single automated test environment.
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