Abstract

In this work, we report the inscription of fiber Bragg grating through the over-clad in cyclic transparent fluoropolymer (CYTOP) optical fiber using a phase mask technique and a 400 nm femtosecond pulsed laser. 8 mm-long grating were obtained in less than 20 s with 500 $\mu$ W average beam power. To investigate the FBG properties and discriminate between the protective over-clad influence and the core-cladding effect, we inscribe FBGs in the fiber with and without the over-clad. We also show that the temperature sensitivity of CYTOP-FBGs with the over-clad depends on the relative humidity, whereas CYTOP-FBGs without the over-clad achieve almost zero sensitivity to humidity and sensitivity to temperature of 26.7 pm/ $^{\circ }$ C.

Ultra-fast fiber Bragg grating inscription in CYTOP polymer optical fibers using phase mask and 400 nm femtosecond laser

Ying-Gang Nan, Damien Kinet, Karima Chah, Ivan Chapalo, Christophe Caucheteur, and Patrice Mégret
Opt. Express 29(16) 25824-25835 (2021)

800 nm femtosecond pulses for direct inscription of FBGs in CYTOP polymer optical fiber

Karima Chah, Ivan Chapalo, Ying-Gang Nan, Damien Kinet, Patrice Mégret, and Christophe Caucheteur
Opt. Lett. 46(17) 4272-4275 (2021)

Long period grating in a multimode cyclic transparent optical polymer fiber inscribed using a femtosecond laser

Antreas Theodosiou, Rui Min, Arnaldo G. Leal-Junior, Andreas Ioannou, Anselmo Frizera, Maria Jose Pontes, Carlos Marques, and Kyriacos Kalli
Opt. Lett. 44(21) 5346-5349 (2019)

Rectangular single-mode polymer optical fiber for femtosecond laser inscription of FBGs

Jitendra Narayan Dash, Xin Cheng, Dinusha Serandi Gunawardena, and Hwa-Yaw Tam
Photon. Res. 9(10) 1931-1938 (2021)

Ytterbium fiber laser based on first-order fiber Bragg gratings written with 400nm femtosecond pulses and a phase-mask

M. Bernier, R. Vallée, B. Morasse, C. Desrosiers, A. Saliminia, and Y. Sheng
Opt. Express 17(21) 18887-18893 (2009)