Abstract: A light distribution device includes a light transmissive substrate having first and second opposing faces and a plurality of substantially parallel linear prisms on the second face that extend in a longitudinal direction of the substrate. The light distribution device is configured to connect to a light assembly including a linear light source with the first face of the substrate facing the light source, with the linear prisms substantially parallel to a light source longitudinal axis and with and the substrate having a non-planar cross-sectional shape such that at least a major portion of the substrate is concave relative to the light source. When connected, the light distribution device is configured to receive light from the light source and distribute the light emerging from the second face of the substrate in a batwing distribution pattern in a plane perpendicular to the light source longitudinal axis.

Abstract: A light transmissive structure includes a light transmissive substrate having first and second opposing faces and array of microprism elements on the first face, with a respective microprism element including a plurality of concentric microprisms. The light transmissive structure is configured to receive light from a light source facing the first face and distribute the light emerging from the second face in a 2D batwing distribution.

Abstract: Light transmissive structures include a light transmissive substrate that includes optical microstructures. The optical microstructures have a geometric feature that is configured to reduce glare in light transmitted through the light transmissive structure. Moreover, the plurality of optical microstructures also have a geometric feature that is configured to vary randomly and/or pseudorandomly across the light transmissive substrate so as to diffuse light transmitted through the light transmissive structure. Related fabrication methods are also described.

Abstract: A light transmissive structure such as a light diffuser includes a substrate having optical microstructures. The optical microstructures include at least one feature that varies across the substrate, so as to produce a visible indicia relative to a viewer of the light transmissive structure. Related diffusers and methods of fabrication are also described.

Abstract: A diffuser is configured to diffuse radiation from multiple light sources. The diffuser includes a substrate having optical structures that exhibit both microvariations and macrovariations along the substrate. For example, an array of microlenses may be provided that include at least one feature that varies as a function of the spacing between the light sources. Lighting systems using these diffusers may also be provided.

Abstract: Provided are a method, system, and device for passing a plurality of light beams though an array of waveguides wherein at least one waveguide is coupled to a test structure which exhibits an insertion loss dependent on a known polarization. For each of a plurality of adjacent waveguides of the array including the one waveguide, a first wavelength response associated with a first polarization, and a second wavelength response associated with a second polarization, may be measured. In one example, polarization may be identified as the known polarization if the peak value of one wavelength response of the test structure is less than the peak value of another wavelength response of the first test structure. In one embodiment, unknown polarizations in the polarization response of an optical component having multiple correlated outputs may be identified. Other embodiments are described and claimed.

Abstract: Devices utilize elements carried by a fluid in a microchannel to switch, attenuate, shutter, filter, or phase shift optical signals. In certain embodiments, a microchannel carries a gaseous or liquid slug that interacts with at least a portion of the optical power of an optical signal traveling through a waveguide. The microchannel may form part of the cladding of the waveguide, part of the core and the cladding, or part of the core only. The microchannel may also have ends or may be configured as a loop or continuous channel. The fluid devices may be self-latching or may be semi-latching. The fluid in the microchannel is moved using e.g., e.g., electrocapillarity, differential-pressure electrocapillarity, electrowetting, continuous electrowetting, electrophoresis, electroosmosis, dielectrophoresis, electro-hydrodynamic electrohydrodynamic pumping, magneto-hydrodynamic magnetohydrodynamic pumping, thermocapillarity, thermal expansion, dielectric pumping, and/or variable dielectric pumping.

Abstract: Devices utilize elements carried by a fluid in a microchannel toswitch, attenuate, shutter, filter, or phase shift optical signals. In certain embodiments, a microchannel carries a gaseous or liquid slug that interacts with at least a portion of the optical power of an optical signal traveling through a waveguide. The microchannel may form part of the cladding of the waveguide, part of the core and the cladding, or part of the core only. The microchannel may also have ends or may be configured as a loop or continuous channel. The fluid devices may be self-latching or may be semi-latching. The fluid in the microchannel is moved using e.g., e.g., electrocapillarity, differential-pressure electrocapillarity, electrowetting, continuous electrowetting, electrophoresis, electroosmosis, dielectrophoresis, electro-hydrodynamic electrohydrodynamic pumping, magneto-hydrodynamic magnetohydrodynamic pumping, thermocapillarity, thermal expansion, dielectric pumping, and/or variable dielectric pumping.

Abstract: Devices utilize elements carried by a fluid in a microchannel toswitch, attenuate, shutter, filter, or phase shift optical signals. In certain embodiments, a microchannel carries a gaseous or liquid slug that interacts with at least a portion of the optical power of an optical signal traveling through a waveguide. The microchannel may form part of the cladding of the waveguide, part of the core and the cladding, or part of the core only. The microchannel may also have ends or may be configured as a loop or continuous channel. The fluid devices may be self-latching or may be semi-latching. The fluid in the microchannel is moved using e.g., e.g., electrocapillarity, differential-pressure electrocapillarity, electrowetting, continuous electrowetting, electrophoresis, electroosmosis, dielectrophoresis, electro-hydrodynamic electrohydrodynamic pumping, magneto-hydrodynamic magnetohydrodynamic pumping, thermocapillarity, thermal expansion, dielectric pumping, and/or variable dielectric pumping.

Abstract: A controllable variable optical attenuator for attenuating an optical signal is described herein. The attenuator has an optical waveguide made from similar waveguide core and cladding materials and a coupling layer in close proximity to the waveguide which is configured to provide a difference between the refractive index of the coupling layer in proximity to the waveguide and the effective index of the waveguide. The index of the waveguide can be modified such that if the refractive index of the coupling layer is substantially lower than the effective index of the waveguide, minimal attenuation occurs to the light in the waveguide. Furthermore, if the refractive index of the coupling layer is substantially greater than the effective index of the waveguide, light is coupled into the coupling layer out of the waveguide to attenuate the optical signal. The amount of attenuation varies smoothly between these maximum and minimum values.