Based on the distributed structure of the dye-protein complexes in a photosynthetic membrane, tandem structure
with two dye-doped polymer layers was fabricated using the nanoimprint lithography. The energy transfer
behavior of different tandem patterns were studied using fluorescence microscope. As a result, duty ration of 1:1
has shown the even fluorescence patterns from the acceptor region, whereas the patterns with higher duty ratios
had shown only partial fluorescence from the donor-acceptor interface.
Optimum combination of light source and medium (optical fiber) for radio-over-fiber application in home optical network was investigated. Japan National Television System Committee (NTSC-J) signal was employed to study the spectrum and the movie quality in different multi-mode fiber link. Noise in glass-based multi-fiber link was lowered by switching the light source from a Fabry-Perot (FP) to a vertical cavity surface-emitting laser (VCSEL). A graded-index plastic optical fiber (GIPOF) link performed a low-noise transmission using FP laser diode. The results supported the GIPOF link to be a good low-cost analog optical link solution using FP laser diode and no lens.
We demonstrate fiber optic analog transmission using NTSC-J signal. Multimode fibers with different core
diameter ranging from 9 to 500 μm were tested in terms of transmission capability under different degree of
misalignments between fibers. Graded index plastic optical fiber made of 500 μm core have shown high potential
in stable analog transmission based on effective light coupling and low modal noise impairment.