Dielectric Waveguide is fabricated on the slide glass or oxidized silicon wafer, by spin coating polyurethane, epoxy or photoresist.
And the phenomenon of dielectric waveguiding is observed. Metal Clad Waveguides are fabricated with Al or Ag and coupling and decoupling are done, and the mode line is observed.
Using the fact that the refractive index of K.P.R. is larger than that of polyurethane, thin film prism with two layered structure is fabricated and the refraction of light is observed.
By etching the multimode step index fiber with 49% HF solution, taper ended fiber is fabricated.
A new type of Multimode Step Index Fiber to Channel Waveguide Coupler is fabricated by etching V Groove with one end tapared, on (100) silicon wafer, and inserting the taper ended fiber at the tapered end of V Groove and placing the pn junction photodetector at the other end.
Coupling between fiber and V Groove waveguide is successfully done and waveguiding along the V Groove is observed.
And the output current of the photodetector is observed to be proportional to the input laser beam power.
Slide glass나 1 ㎛가량의 oxide를 입힌 silicon wafer위에 polyurethane이나 epoxy등을 spin coat 시켜서, Dielecric Waveguide를 제작하고, prism으로 coupling 시켜서 waveguiding 현상을 확인 했다.
Al이나 Ag을 진공 증착시킨 것을 substrate로 사용하여 Metal Clad Waveguide를 제작하고, prism 2개로 coupling decoupling 시켜서 mode line을 관찰 했다.
K.P.R.의 굴절율이 polyurethane의 굴절율 보다 큰 점을 이용하여 2층 구조의 Thin Film Prism을 제작하고 실제로 빛이 꺾이는 현상을 확인 했다.
49% HF로 fiber를 etching시켜 Taper Ended Fiber를 제작했다.
(100) Silicon Wafer위에 한 쪽 끝이 taper진 V Groove를 파고, taper진 쪽에 Taper Ended Fiber를 끼워서, 새로운 형태의 Fiber to Channel Waveguide Coupler를 제작하고, Fiber와 Channel Waveguide 사이의 coupling과 V Groove를 따라서 Waveguiding 시키는데 성공 했다.
