Iridian has a wealth of experience in designing and manufacturing optical filters for both long-distance signal transportation (telecom filters) and for short-range data center interconnects (datacom filters).
Application Notes

Fire Detectives In Orbit: Using Remote Sensing to Detect Wildfires
Iridian provides cost effective, advanced optical technology to enable optical Earth Observation (EO) and Remote Sensing for the purpose of wildfire detection, tracking, and management. Contact us for a customized solution to fit your needs.
How Compensating Gain Flattening Filters Improve PPEF Performance
How Compensating Gain Flattening Filters Improve PPEF Performance. Iridian’s premium compensating GFFs offer a means to better control PPEF using what is known as the multi-design compensating method.

How to Choose a Raman Filter For Drug ID And Characterization
Precise use of filters gives Raman spectroscopy fantastic utility not only in drug identification and inspection but also the detection of explosives and unknown substances, materials inspection by U.S. Customs and port authorities, and food safety inspection. To learn more about choosing the right optical filter(s) for your drug ID applications, click to read the full article, contact the author or visit our website.
Improving DWDM Module Performance with Narrow Dual Band Pass Filters
By Xiaolun Zeng, Michelle Briere, and Rebecca Saaltink, Iridian Spectral Dense wavelength division multiplexing (DWDM) enables fiber-optic...
How Premium GFFs Improve EDFA Performance And Optimize Module Design
Iridian’s premium GFFs deliver higher-level performance than traditional GFFs to meet stringent PPEF specifications, as well as provide additional...
Optical filters and Etalons for Datacom Applications
Data center evolution is driving demand for ever-higher data transmission rates, necessitating innovation in data center optical interconnect...
Handheld Raman vs “Fingerprint” Applications and the Different Optical Filters that Enable Them
Raman spectroscopy is a powerful and increasingly ubiquitous analytical tool capable of identifying molecular constituents of samples under test and, when combined with microscopy, exploring specific cellular structures and functions. Non-invasive, non-contact, requiring no sample preparation or chemical tagging – it is no wonder that Raman has established a presence as an invaluable analytical technique both in labs and in the field.
Solving PCR Filter Challenges For High-Performance qPCR Instruments
qPCR instrument users need high sensitivity and pristine signal clarity to achieve numerous delicate tasks. The right combination of optical filters significantly improves this functionality.
The Application of WDM Channel Skip Filters
Channel skip filters are components added to wavelength division multiplexing (WDM) add/drop modules — in both coarse wavelength division multiplexing (CWDM) and dense wavelength division multiplexing (DWDM) applications — to facilitate band splitting and to manage multiple ITU channels.
These filters feature narrow transitions from pass band to blocking band, minimizing lost channels while maintaining high spectral efficiency (i.e., limiting insertion loss) since the express channels undergo only one reflection.
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