Iridian Spectral Technologies Ltd (Iridian) – Ottawa, ON, Canada – www.iridian.ca – Founded in 1998, Iridian Spectral Technologies Ltd is a diversified optical filter manufacturer that is an international leader in custom optical filter design and manufacture especially for application in the fields of optical communications (telecom/datacom/satcom), optical spectroscopy (Raman/fluorescence), remote sensing (gas detection/Earth observation/LiDAR), 3D entertainment, and many more.  Iridian Spectral Technologies Ltd has ISO9001-2015 certification and is part of the Canadian Controlled Goods Program.  Follow us on LinkedIn at https://www.linkedin.com/company/3325030 or Twitter @IridianSpectral


iridian filters
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.  Continue Reading..
The Eyes Of The Instruments: Using Optical Filters To Observe And Measure Earth From A Different Perspective
An improved ability to manage or understand the natural or influenced phenomena is critical to ensuring that we maintain a healthy planet capable of sustaining humanity as part of its diverse biomass. But understanding these phenomena and how they are changing over time requires measurement.  Continue Reading..
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How To Enhance Optical Blocking Using Multiple Filters
Any background light that reaches the detector of an optical system can greatly compromise signal-to-noise ratio. Using more than one blocking filter is a solution that requires careful consideration.  Continue Reading..
Filter Specs Vs. Functional Specs – The Pitfall Of Double Margining
In designing a filter solution, the filter manufacturer takes the values requested by the user and adds additional design margin to account for both functional effects and filter manufacturing effects such as edge steepness, nonuniformity, and wavelength targeting.  Continue Reading..
How A Filter Is Specified
To achieve a desired optical functionality, key parameters must be communicated. Understanding the filter function and use conditions allows the filter design team to create a filter specification that will ensure the functional requirements are met by a filter that is manufacturable under the commercial constraints (cost, lead-time, volume) of the customer.  Continue Reading..
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 functionality.  Continue Reading..
Datacenter Interconnect Bandwidth: The Role of Optical Filters and Etalons
Data center evolution is driving demand for ever-higher data transmission rates, necessitating innovation in data center optical interconnect component design.  Continue Reading..


  • Jason Palidwar of Iridian Spectral Technologies talks to Photonics Online at Defense + Commercial Sensing 2022 about Iridian’s optical filters and how they’re used in remote sensing applications including earth observation and gas detection.

  • What is a steering wheel? This might not be such an odd question for drivers in the near future. As autonomous vehicles begin to dominate our roads, lidar will be an important technology that will allow them to navigate and respond in a safe manner.

  • Iridian Spectral Technologies offers advanced thin film optical filter technology for telecom, spectroscopic instrumentation and lasers, as well as biophotonics, micro-optics, and aerospace applications.

  • As Datacom applications become more widespread, greater requirements are placed on optical filter reliability, storage capabilities, smaller sizes, and costliness. At Photonics West 2018, Jason Palidwar of Iridian Spectral discussed the importance of the use of optical filters in regards to how they help transfer, store, and access data from the Cloud<>

  • On the first day of DCS 2017, Jason Palidwar, with Iridian Spectral Technologies, spent a few minutes with us talking about the 3 key criteria that apply to all of the filters his company manufactures – surface quality, spectral characteristics, and durability and reliability.


Iridian Spectral Technologies

2700 Swansea Crescent

Ottawa, ON K1G6R8


Phone: 613-741-4513

Contact: Jason Palidwar