Reflection (computer programming)

Fabrication

Materials science

Refractive index

Optical fiber

Core (optical fiber)

Computer science

Alternative medicine

Laser

Physics

Optical filter

Waveguide

Optics

Composite material

Photosensitivity

Fiber

Medicine

Programming language

Optoelectronics

Pathology

Applied Physics Letters

The observation of photosensitivity in Ge‐doped core optical fibers is reported. The photosensitivity is manifested by light‐induced refractive‐index changes in the core of the waveguide. Narrowband reflectors in a guide structure have been fabricated using this photosensitivity and the resulting DFB reflectors employed as laser mirrors in a cw gas laser in the visible.

Photosensitivity in optical fiber waveguides: Application to reflection filter fabrication