Abstract: An electro-optic modulator is formed from all flexible materials, to form a flexible electro-optic modulator. The formation process uses a photoresist which selectively adheres to one material more than it adheres to another material. This allows selective liftoff, where only parts of the substrate are lifted off. For example, this allows silicon ends on the modulator, thereby facilitating pig tailing and also facilitates handling. Another aspect describes testing the bending radius.

Abstract: A lithography apparatus is provided. The apparatus includes: a stage, a first light source unit, an optical system, an image obtaining means, an image edit means, an LC panel, and a second light source unit. The LC panel is coupled with the optical system and receives a signal of the image edited by the image edit means and displays the received image to perform a photo mask function. The second light source unit provides light used in performing an exposure on the test material using the imaged displayed on the LC panel for a photo mask.

Abstract: The present invention provides a flexible wire grid polarizer used in a visible ray band and a fabricating method thereof. The present invention includes the steps of forming a non-adhesive layer on an inner area of a lower substrate, forming a flexible polymer substrate on the lower substrate including the non-adhesive layer, forming a thin metal layer on the flexible polymer substrate, forming a metal grid pattern by etching the thin metal layer, dicing a wafer staying within a boundary of the non-adhesive layer on the lower substrate, and separating the lower substrate including the non-adhesive layer from the diced wafer to complete the flexible wire grid polarizer.

Abstract: Disclosed herein is a method of manufacturing a mold for patterning a lower cladding layer of a wavelength filter, which includes a) etching a substrate to form a grating pattern on the substrate; b) preparing an etching mask for an optical waveguide pattern and then etching the substrate using the etching mask; and c) removing the etching mask. In addition, a method of manufacturing a waveguide-type wavelength filter is also provided, including a) applying a lower cladding layer on a substrate; b) patterning the lower cladding layer, using the mold; c) setting the pattern of the mold in the lower cladding layer and then removing the mold; and d) sequentially forming a core layer and an upper cladding layer.

Abstract: An optical true-time delay apparatus comprising: an optical fiber composed of a core layer and a cladding layer wrapping the core layer, and having a taper portion formed on an outer circumferential surface of the cladding layer along a circumferential direction thereof so that a distance from the taper portion to the core layer can gradually be changed along a longitudinal direction of the optical fiber; a bragg grating formed in the core layer at a uniform interval along the longitudinal direction of the optical fiber and corresponding to the taper portion; and a heating portion formed to wrap the taper portion, a distance from the heating portion to the bragg grating being gradually changed in a longitudinal direction of the optical fiber, whereby a true-time delay of an optical signal can effectively be controlled by adjusting a temperature of the heating portion to thereby vary an effective index of refraction of the optical fiber bragg grating.

Abstract: Provided are an optical true-time delay apparatus and a manufacturing method thereof. The optical true-time delay apparatus comprises: an optical fiber composed of a core layer and a cladding layer wrapping the core layer, and having a taper portion formed at a certain part of an outer circumferential surface of the cladding layer, a distance from the taper portion to the core layer being gradually changed along a length direction of the taper portion; a bragg grating formed at a uniform interval in the core layer placed within the section in which the taper portion is formed; and a heating portion formed on a part of the taper portion corresponding to the part where the bragg grating is formed along a length direction of the optical fiber for thereby wrapping the taper portion.

Abstract: An electro-optic modulator is formed from all flexible materials, to form a flexible electro-optic modulator. The formation process uses a photoresist which selectively adheres to one material more than it adheres to another material. This allows selective liftoff, where only parts of the substrate are lifted off. For example, this allows silicon ends on the modulator, thereby facilitating pig tailing and also facilitates handling. Another aspect describes testing the bending radius.