Zero-birefringence photosensitive polyimides for optical waveguides.
Zero-birefringence (delta n < 1 x 10(-6)) photosensitive fluorinated polyimides are synthesized for use in polymer optical waveguides. To obtain zero birefringence, the UV exposure time and copolymer content of photosensitive polyimides are controlled. Zero birefringence combined with photoprocessing of the material has excellent potential for applications in high-performance wavelength division multiplexing components such as polarization-independent arrayed waveguide gratings and Bragg wavelength filters.
Baek
Sung Ho
SH
Department of Materials Science and Engineering, Kwangju Institute of Science and Technology, Kwangju 500-712, Korea.
Kang
Jae-Wook
JW
Li
Xiangdan
X
Lee
Myong-Hoon
MH
Kim
Jang-Joo
JJ