A new type of photosensitive optical fibre codoped with Ge2O-B2O3 in both the core and cladding has been fabricated for applications in Bragg gratings. Coupling of the fundamental core mode into the cladding modes was suppressed with a narrow 3dB bandwidth in the Bragg grating. An increase in photosensitivity was also achieved by using high reflectivity Bragg gratings imprinted without the need for any hydrogen treatment.
|Number of pages||2|
|Publication status||Published - 1999 Mar 4|
All Science Journal Classification (ASJC) codes
- Electrical and Electronic Engineering