Buying Photosensitive Fibers

See us at SPIE Photonics West 2025 in San Francisco, January 25–30 (booth 5039)!

Exail (formerly iXblue) is offering different types of photosensitive single-mode fibers for fiber Bragg gratings:

• IXF-PHO-CMF and IXF-PHO-CMF-PM are designed to suppress the cladding mode losses (CMF = Cladding Mode Free). The fibers have a mode field diameter similar to most standard SMF with a relatively low photosensitivity that can be enhanced with hydrogen loading. The main benefits are the cladding mode suppression and an extremely low birefringence and a low phase noise, making it suitable for gratings for compensation of large dispersion.
• IXF-PHO-CMS is designed to adapt the cladding mode offset (CMS Cladding Mode Shifted) in order to optimize the channel spacing. This fiber has very high germanium core concentration, with low attenuation compared to exotic boron-doped core fibers, enabling high reflectivity gratings without hydrogen loading. CMS series will shift the cladding modes by up to 10 nm.

Our photosensitive fibers exhibit uniform and controlled photosensitivity to conventional UV radiation techniques. Similar fibers are available with polyimide coatings for harsh environments.

Benefits and features:

• excellent cladding mode suppression
• mode field diameter matched to transmission

Applications: fiber Bragg gratings, gain flattening filters, broadband filters, temperature and strain sensors.

Innovation in every fiber

See us at SPIE Photonics West 2025 in San Francisco, January 25–30 (booth 5123)!

Fibercore’s photosensitive (PS) series of fibers have a high-germania and boron co-doped core composition, enabling high-reflectivity gratings to be written without the need to hydrogen-load. The mode field diameters of the boron co-doped fibers are engineered so gratings may be spliced into standard telecommunications, or pigtailing fiber with minimal excess loss.