In-fiber polymer-glass hybrid waveguide Bragg grating.
A 1.2 microm (height) x 125 microm (depth) x 500 microm (length) microslot along a fiber Bragg grating was engraved across the optical fiber by femtosecond laser patterning and chemical etching. By filling epoxy in the slot and subsequent UV curing, a hybrid waveguide grating structure with a polymer core and glass cladding was fabricated. The obtained device is highly thermally responsive with linear coefficient of 211 pm/ degrees C.
Zhou
Kaiming
K
Photonic Research Group, Aston University, Birmingham B4 7ET, United Kingdom. k.zhou@aston.ac.uk
Chen
Xianfeng
X
Lai
Yicheng
Y
Sugden
Kate
K
Zhang
Lin
L
Bennion
Ian
I