Improvement of Benzocyclobutene Multimode Interference Optical Power Splitter
Date Issued
2009
Date
2009
Author(s)
Dibba, Isatou
Abstract
Four 1×3 multimode interference (MMI) optical power splitters were designed but only two out of the four 1×3 multimode interference (MMI) optical power splitters wereabricated. One of the fabricated devices is the 1×3 buried-type rectangular MMI section and the other one is a 1×3 linearly tapered input MMI section optical power splitters. The ultraviolet laser light illumination process was used to develop waveguide patterns on benzocyclobutene (BCB).coated silicon substrate. The laser source of 248nm islluminated through the quartz mask to the BCB polymer wafer. The device is designed to have an input waveguide of 7μm wide and the central part or the MMI section is 60μmide and of course three single mode waveguide outputs each as wide as the input waveguide. A refractive index change of 0.0027 was used for the design of both devices.he best 1The best 1×3 with a rectangular MMI section at an MMI length of 1500µm will exhibit an imbalance of 1.02dB and total transmission output of 90.85%. The best 1×3 linearly tapered input MMI section will give an imbalance of 2.85dB and a total transmission output of 92.66%. By tapering the input portion of the MMI section of the optical power splitter the transmission can be improved. This can be proved by comparing the results obtained from the two 1×3 MMI optical power splitters. The aim of this research is to obtain a better transmission for the 1×3 MMI power splitters and also to obtain a fair power distribution. Since 1×N (with N being odd) cannot easily perform the later reason many researchers are focused on the fabrication of 1×2N (where N is an even number).his research was able to achieve an experimental result that agrees very well with the simulation results that is, to obtain a higher output transmission.
Subjects
polymer
benzocyclobutene
ultraviolet laser light
optical power splitter multimode interference
transmission improvement
Type
thesis
File(s)![Thumbnail Image]()
Loading...
Name
ntu-98-R96941107-1.pdf
Size
23.32 KB
Format
Adobe PDF
Checksum
(MD5):410e06a0558356bff1ec10436deea5e3