Title :
Light Modulation Based on Fiber Cladding Mode Coupling Between Concatenated Long-Period Gratings
Author :
Sáez-Rodríguez, D. ; Cruz, J.L. ; Andrés, M.V.
Author_Institution :
Dept. de Fis. Aplic. y Electromagnetismo, Univ. de Valencia, Valencia, Spain
Abstract :
In-fiber efficient light modulation using two concatenated long-period gratings (TCLPG), written in single-mode fiber, is reported. The device is compressed in the middle of both gratings against a corrugated surface, with a piezoelectric, producing a transfer of energy between cladding modes which results in modulated light transmission. The TCLPG operates at 1542 nm, with a bandwidth of 29 nm and an insertion loss of 0.3 dB. The modulation depth is 20 dB and the rise time is 7.5 ms at a repetition rate of kilohertz.
Keywords :
diffraction gratings; optical couplers; optical fibre cladding; optical modulation; corrugated surface; fiber cladding; light modulation; mode coupling; single-mode fiber; time 7.5 ms; two concatenated long-period gratings; wavelength 1542 nm; wavelength 29 nm; Fiber gratings; Gratings; Modulation; Optical fiber amplifiers; Optical fiber sensors; Bragg gratings; optical fiber applications; piezoelectric transducers; pulse modulation;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2010.2095835
