FAQ
HOLLOW-CORE PHOTONIC CRYSTAL FIBER
Q: Is there a specific process to cleave your fibers?
A: The process is very close to standard optical fiber. You can use standard cleaving tools such as stripper and cleaving pen, as they are compatible with our fiber outer diameter. Please find below a movie describing the cleaving process.

Q: What are the differences between Kagome fiber and the Photonic bandgap (PBG) fiber ?
A: Unlike Photonic Bandgap fiber, Kagome fiber guides light via Inihibited Coupling between the core modes and those of fiber cladding. This guidance mechanism using Kagome fiber provides unique features such as more than 100 fold reduction of light-silica interaction compared to PBG fiber. It also allows broadband guidance and lower loss particularly in the lower part of the optical spectrum.
 
Q: How do I couple light into your fiber?
A: As with all other fibers you can use butt-coupling, free space coupling and even splicing. However, to fully benefit from our fiber capability you need to match both the numerical aperture and the mode field diameter of our fiber. 
PMC
Q: What’s a Photonic MicroCell?
A: It’s a photonic component based on a hollow-core fiber (indifferently PBG or IC fiber) within which a given gas is maintained at a given pressure. To keep the gas inside the fiber, the latter could be either spliced to standard singlemode fiber or attached to mechanical cells depending on the application and customer requirement.
Q: How long does it take to fill the PMC?
A: Of course it varies with a bunch of parameters (fiber length, core size, desired pressure….) but for most of the applications a couple of hours are sufficient to ensure a stable pressure into the PMC. For more details please look at this article (Dynamics of gas flow in hollow core photonic bandgap fiber).