Fiber Bragg gratings with suppressed cladding modes made in SMF-28 with a femtosecond IR laser and a phase mask

Author

Grobnic, D. ; Smelser, C.W. ; Mihailov, S.J. ; Walker, R.B. ; Lu, P.

Author_Institution

Commun. Res. Centre Canada, Ottawa, Ont., Canada

Volume

16

Issue

8

fYear

2004

Firstpage

1864

Lastpage

1866

Abstract

High reflectivity fiber Bragg gratings (FBG) with strong cladding mode suppression were written in standard telecom fiber (SMF-28) with femtosecond 800-nm laser pulses and a phase mask. No special fiber photosensitization or fiber design was required. Induced index modulations were created by two-beam interference from the phase mask in both the core and cladding region, which resulted in cladding-mode coupling loss <0.1 dB for a high reflecting -30 dB in transmission FBG.

Keywords

Bragg gratings; high-speed optical techniques; laser materials processing; masks; optical fibre cladding; 800 nm; SMF-28; cladding mode coupling; cladding-mode coupling loss; femtosecond 800-nm laser pulses; femtosecond IR laser; high reflectivity fiber Bragg gratings; induced index modulations; phase mask; standard telecom fiber; strong cladding mode suppression; suppressed cladding modes; two-beam interference; ultrafast optics; Bragg gratings; Couplings; Fiber gratings; Fiber lasers; Interference; Laser modes; Optical pulses; Phase modulation; Reflectivity; Telecommunication standards;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2004.831239

Filename

1316949