CTT offers a wide range of passive optical devices for the frequency range between 30GHz and 30THz.
Our technology is remarkably versatile and these examples are presented to give you a sense of what we can do.
In what follows we show the measured performance of single devices. For sophisticated applications a combination of filters will be needed.
You are not likely to find exactly what you're looking for displayed here, but don't worry. We're confident we have a solution to suit you.
Contact us to discuss your needs.
Low-pass
In a typical low-pass (long-pass) device broadband average in-band transmission efficiency is 90% while attenuation at frequencies above the transition will be -35dB (0.03 %).
High-pass
In a high-pass (short-pass) device the transmission window is limited to a range of about one octave. Out of band attenuation at frequencies below the transition is better than -40dB.
Band-pass
The peak transmission efficiency of a band-pass structure will vary with frequency and bandwidth requirement. Here are some examples. Let us know what you need in terms of:
(i) centre frequency
(ii) bandwidth (the frequencies at which transmission drops to half-maximum)
(iii) attenuation
(iv) the range of frequencies over which attenuation is to be achieved
Band-stop
In a simple band-stop structure, attenuation at a prescribed frequency can be -20dB. If higher attenuation is required multi-layer structures are available.
Dichroic Options
Dichroic beamsplitters are available in both low-pass and high-pass configuration.
