In this paper, a brief summary of different methods of fabrication of optical preform and fiber is reviewed. Several methods of incorporation of erbium ions into optical preforms are studied. Characterization of the fabricated erbium doped fibers including measurements of refractive index profile, absorption, fluorescence and gain spectra and metastable lifetime are described. It is also expres...

This paper presents the design and a new low-cost process for fabrication of a second-order micromechanical filter using UV-LIGA technology. The micromechanical filter consists of two identical bulk-mode ring resonators, mechanically coupled by a flexural-mode beam. A new lumped modeling approach is presented for the bulk-mode ring resonators and filter. The validity of the analytical derivatio...

A clear distinction generally exists between processes of design generation and processes of design production. The profusion of digital fabrication tools and technologies make evident such distinctions in the context of design production but at the same time carry potential for material and fabrication-based processes promoting generative design methods. Such strategic application and customiz...

A clear distinction generally exists between processes of design generation and processes of design production. The profusion of digital fabrication tools and technologies make evident such distinctions in the context of design production but at the same time carry potential for material and fabrication-based processes promoting generative design methods. Such strategic application and customiz...

objective: an immediate complete denture is fabricated before the extraction of all teeth. it has several advantages such as preservation of esthetics, muscular tone, normal speech and reduction of post-operative pain. this report describes a method of using patient’s current fixed partial denture (fpd) for single-appointment construction of interim immediate denture.   case: we used patient’s ...

This paper presents a model fabrication scheme that automatically approximates a model whose boundary consists of several freeform surfaces by developable surfaces and then unroll these developable surfaces onto a plane. The model can then be fabricated by assembling the sets of developable surfaces which have been cut from planar sheets and rolled back to their proper Euclidean locations. Both...

A clear distinction generally exists between processes of design generation and processes of design production. The profusion of digital fabrication tools and technologies make evident such distinctions in the context of design production but at the same time carry potential for material and fabrication-based processes promoting generative design methods. Such strategic application and customiz...