photomask grating

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Fiber Bragg grating — A fiber Bragg grating (FBG) is a type of distributed Bragg reflector constructed in a short segment of optical fiber that reflects particular wavelengths of light and transmits all others. This is achieved by adding a periodic variation to the… … Wikipedia
Off-axis illumination — In photolithography, off axis illumination is an optical system setup in which the incoming light strikes the photomask at an oblique angle rather than perpendicularly to it, that is to say, the incident light is not parallel to the axis of the… … Wikipedia
Interference lithography — (or holographic lithography) is a technique for patterning regular arrays of fine features, without the use of complex optical systems or photomasks. Basic principleThe basic principle is the same as in interferometry or holography. An… … Wikipedia
Nanoimprint lithography — is a method of fabricating nanometer scale patterns. It is a simple nanolithography process with low cost, high throughput and high resolution. It creates patterns by mechanical deformation of imprint resist and subsequent processes. The imprint… … Wikipedia

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