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Application notes, white papers and videos.

Testing Considerations for High-Density Co-Packaged Optical Devices

WHITE PAPER

This white paper provides an overview of the work underway to ensure the interoperability of co-packaged optical devices for a variety of high-bandwidth applications, and discusses how to address the testing challenges coming with this new technology.


Selecting the Right Optical Modulation Analyzer (OMA) for Manufacturing Test

APPLICATION NOTE

One of the key questions OMA users should ask is “how much bandwidth do I need for my OMA system?” In this application note, we take a deep dive into the relationship between signal bandwidth and Optical Modulation Analyzer bandwidth, and clarify how much bandwidth is required to test coherent-based modulation formats in a manufacturing setting.


Relative Intensity Noise (RIN) Measurement

APPLICATION NOTE

Semiconductor laser Relative Intensity Noise (RIN) is an important parameter that can cause significant degradation to the performance of fiber optic communication links. It is important for both laser manufacturers and systems designers to understand how RIN is measured to ensure reliable, accurate and repeatable results.


Measuring Laser Linewidth

APPLICATION NOTE

Low linewidth lasers are important for use in systems such as coherent communications, fiber optic sensors, interferometric sensing and gas detection. This application note covers the theory and importance of laser linewidth measurements, especially as they relate to low-linewidth lasers.


Hardware Triggering of Quantifi Photonics’ PXIe Optical Modules

APPLICATION NOTE

PXI’s integrated timing and hardware triggering capabilities offer a number of advantages over more traditional software-initiated measurements. Learn how to make the best use of the hardware triggering capability present in Quantifi Photonics’ PXIe photonics modules.


Transient Testing in PXI

APPLICATION NOTE

Until recently, measurements of power versus time were only available using expensive oscilloscopes and optical-to-electrical converters. These solutions required complex synchronization and suffered from poor power accuracy and dynamic range in addition to requiring extra equipment. With the TRACE capability of Quantifi Photonics’ optical power meters, you can capture accurate time domain power meter readings over the entire range of the power meter (>70dB).


Testing Optical Transceivers Designed for Aerospace and Defense Applications

APPLICATION NOTE

Optical transceivers are increasingly being deployed into non-datacom applications in the automotive, aerospace and defense industries. In this application note, using the PXI platform we will showcase some of the common test configurations designed for transceivers which use multi-fiber channels of multimode fiber (MMF), running at the wavelength range of 850nm.


100G and 400G Optical Transceiver Test Configurations

VIDEO

Defining and configuring a tightly integrated test system that can scale with the many SFP Application Codes of optical transceivers can be challenging. By selecting a flexible and future-proof test platform, many of the common challenges can be overcome. This in-depth video provides an overview of 100G and 400G transceiver test configurations using a PXI system.

Watch on YouTube

Photonic Doppler Velocimetry (PDV)

APPLICATION NOTE

The velocity measurement of fast-moving materials is essential to several areas of scientific and technical investigations, and new applications will continue to be found.


Multi-Channel PDV Systems

VIDEO

In this video, David McCormick, Technical Sales Manager for North America, provides an overview of Photon Doppler Velocimetry (PDV) and provides in-depth examples of how to integrate multi-channel and multiplexing techniques using Coherent Solutions instruments in your PDV test system.

Watch on YouTube

PDV Sensitivity Demonstration With a Class 1M Target Laser

In this video, David McCormick, Technical Sales Manager for North America, provides an overview of Photon Doppler Velocimetry (PDV) and provides in-depth examples of how to integrate multi-channel and multiplexing techniques using Coherent Solutions instruments in your PDV test system.

Watch on YouTube

PDV Frequently Asked Questions (FAQs)

FREQUENTLY ASKED QUESTIONS

By working with many customers we have compiled a list of Frequently Asked Questions covering PDV techniques and instrument selection.

Example questions:
What velocities can be measured with the sampling rate of my oscilloscope?
What type of tunable laser sources should I choose?
Why are two laser sources needed in a typical PDV system?
Should my PDV setup be heterodyne or homodyne?