Essay --

In this paper straight line structures are generated on uprise of Polymethylmethacrylat (PMMA)with UV-Lamp and Excimer-Laser in order to photolytically increase its refractive index to allowguiding of light in the sample. The structures were engraved victimisation contact mask 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 agitatein refractive index using a single vogue 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 supermans, uence and laser 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 fa st method. Masks allow creating waveguides with single modeproperty with width 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 narrow scope of a laboratory project complimenting the lecturesfor understanding the electromagnetic theory of wave guide and ray optical mode of annexe inplanar subwave but only with the aim of creating a substantial understanding of working 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 discourse andsensor t... ...ntrast betweenfabrication of UV lamp and Excimer laser. Sincewe did not use the detector, it can be the UV Lamp powerrating had degraded over the passage of time. wave guideends on the mask were not polished either before beingirradiated. The PMMA sample was manufactured byRoehm GmbH which includes UV stabilizing characteristic6. Furthermore, Frank21 has been able to pee-peeexcellent 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 little 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.