Search Menu
Photonics Media Photonics Buyers' Guide Photonics Spectra BioPhotonics EuroPhotonics Vision Spectra Photonics Showcase Photonics ProdSpec Photonics Handbook

Sabeus Photonics Inc.

Facebook Twitter LinkedIn Email Comments
Cold Writing Sensor Technology

Sabeus Photonics's Cold Writing Sensor TechnologyCold writing technology allows sensors to be written directly into a fiber's core without compromising its integrity, tensile strength or durability. The technique does not require stripping and recoating the fiber, and it eliminates the need for external protective packaging. The company says the mechanical strength and reliability of the gratings is improved by a factor of three compared with traditional gratings.

To develop a mass-production process for these fiber Bragg gratings, developer Sabeus Photonics Inc. of Chatsworth, Calif., had to consider the physics of light's interaction with fiber. Because standard fiber coatings are not transparent to the conventional 240-nm of UV writing radiation, the company developed a method of changing the refractive index by using 330- or 350-nm radiation.

The softer UV light penetrates buffer coatings and enables an inexpensive plastic replica phase mask to be used rather than a fused silica phase mask, making fabrication a one-step process.

Applications for sensors manufactured with this scalable process include telecommunications, in-well temperature monitoring, gas lift optimization and tube integrity detection. The technology will enable the development of land-based, down-hole and underwater sensor applications that were previously impossible.

Photonics Spectra
Jan 2003
coatingsCold writing technologyCommunicationsFeaturesfiber Bragg gratingsrefractive indexSabeus PhotonicsSensors & Detectors

back to top
Facebook Twitter Instagram LinkedIn YouTube RSS
©2020 Photonics Media, 100 West St., Pittsfield, MA, 01201 USA, [email protected]

Photonics Media, Laurin Publishing
x Subscribe to Photonics Spectra magazine - FREE!
We use cookies to improve user experience and analyze our website traffic as stated in our Privacy Policy. By using this website, you agree to the use of cookies unless you have disabled them.