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Sunday, March 17, 2019

Essay --

In this paper straight line structures are generated on scrape up of Polymethylmethacrylat (PMMA)with UV-Lamp and Excimer-Laser in order to photolytically increase its deflective index to allowdirective of light in the sample. The structures were engraved using contact mask ingest 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. The fictive structures on the surface of PMMA of few micrometers were then examined for its changein refractive index using a single mode ber (wavelength 670nm) and Beamlux II softw sports stadium. Our sim-ple essay compliments the previously found studies such that refractive index professionalle stronglydepends on the irradiation doses, uence and laser pulse rate. The finishing caputs toward usingPMMA substrate for optoelectronic phthisis by creating waveguides with UV or Excimer-laser be crusadeit is an inexpensive, artless and fast 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 intend scope of a laboratory project complimenting the lecturesfor savvy the electromagnetic speculation of wave guide and ray optical mode of propagation inplanar subwave notwithstanding 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 tolerate become very important in theeld of integrated optics area for communication and demodulator t... ...ntrast betweenfabrication of UV lamp and Excimer laser. Sincewe did not use the detector, it can be the UV Lamp powerrating had degraded everywhere the passage of time. Waveguideends on the mask we re not polished each before beingirradiated. The PMMA sample was manufactured byRoehm GmbH which includes UV stabilize 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 reason that perhaps our irradiation and completedose was too little to cause a refractive index change.The whole experiment was conducted everyplace 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.

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