Essay --

In this paper straight line structures are generated on surface of Polymethylmethacrylat (PMMA)with UV-Lamp and Excimer-Laser in mold to photolytically increase its refractive index to allowguiding of light in the sample. The structures were engraved using contact clothe sampling on surfaceof PMMA with UV-Lamp (spectrum wavelength 100nm - 410nm) and Excimer-Laser (wavelength248nm) supplemented by micromachining directly on surface of PMMA with Excimer-Laser. Thefabricated structures on the surface of PMMA of few micrometers were then examined for its changein refractive index using a star mode ber (wavelength 670nm) and Beamlux II softwarea. Our sim-ple experiment compliments the previously found studies such that refractive index prole stronglydepends on the irradiation doses, uence and optical maser pulse rate. The conclusion points toward usingPMMA substrate for optoelectronic use by creating waveguides with UV or Excimer-laser becauseit is an inexpensive, simple and fast meth od. Masks allow creating waveguides with single modeproperty with breadth as small as 3um allowing specic-to-need created structures and waveguidesby altering irradiation parameters. It is wise to point out that the experiment has been thoroughlyresearched however conducted in a specialise scope of a laboratory project complimenting the lecturesfor understanding the electromagnetic theory of wave guide and ray optical mode of propagation in planar subwave but only with the aim of creating a substantial understanding of guideing principlesbehind waveguides only to serve later for as a ground work for thesis, new ndings or researchpurposes.Indeed polymers have become very important in theeld of integrated optics area for communication andsensor t... ...ntrast amidstfabrication of UV lamp and Excimer laser. Sincewe did not use the detector, it can be the UV Lamp powerrating had degraded everyplace the passage of time. Waveguideends on the mask were not polished either before bein girradiated. The PMMA sample was manufactured byRoehm GmbH which includes UV stabilizing characteristic6. Furthermore, Frank21 has been able to produceexcellent waveguides with UV radiation but with uenceat 1mW=cm2 and irradiated for 2-3 hours totaling a completedose in the range of 7J=cm2 to 14J=cm2 . Therefore,we concluded that perhaps our irradiation and completedose was too half-size to cause a refractive index change.The whole experiment was conducted over a period ofapproximately 10 weeks and no change in the waveguidesover the passage of time was observed which points towardsits practical application in sensor technology.