Abstract: Examples described herein relate to an optical switching device wherein a racetrack resonant structure is positioned to determine a frequency passband by coupling. In some examples, a first waveguide receives an input light signal. A second waveguide is positioned to enable the input light signal to couple between the first waveguide and the second waveguide through a first coupling gap. The racetrack resonant structure is positioned adjacent to the first coupling gap to enable the input light signal to couple between one of the first waveguide and the second waveguide and the racetrack resonant structure through a second coupling gap. Thus, the racetrack resonant structure is to determine the frequency passband such that a first portion of the input light signal that coincides with the frequency passband is output by the first waveguide, and a second portion of the input light signal that does not coincide with the frequency passband is output by the second waveguide.

Abstract: Examples described herein relate to an optical switching device wherein a racetrack resonant structure is positioned to determine a frequency passband by coupling. In some examples, a first waveguide receives an input light signal. A second waveguide is positioned to enable the input light signal to couple between the first waveguide and the second waveguide through a first coupling gap. The racetrack resonant structure is positioned adjacent to the first coupling gap to enable the input light signal to couple between one of the first waveguide and the second waveguide and the racetrack resonant structure through a second coupling gap. Thus, the racetrack resonant structure is to determine the frequency passband such that a first portion of the input light signal that coincides with the frequency passband is output by the first waveguide, and a second portion of the input light signal that does not coincide with the frequency passband is output by the second waveguide.

Abstract: Methods, apparatus, and systems for automated reflector tuning include combining high precision automated photogrammetric measurement with high precision servo actuator positioning control of a reflector surface using custom optimizing control software to produce a novel, fully automated satellite reflector alignment tuning system. Precise adjustment to the shape of the reflecting surface of an antenna reflector (reflector tuning) can be essential for a satellite reflector antenna to meet electrical performance requirements, usually requiring a shape accurate to within 0.004 inches RMS. The automated reflector tuning may include determining a set of characterization coefficients by precisely measuring the response of the reflector shape to actuator movements, and using the characterization coefficients in a mathematical analysis to determine optimal actuator movements to achieve a required shape of the reflector surface.

Abstract: An modular reflector assembly may include a shell and a support frame. The modular reflector assembly may also include a plurality of support links that mechanically couple the shell to the support frame. The shell may be thermally decoupled from the support frame by the plurality of support links.

Abstract: Methods, apparatus, and systems for automated reflector tuning include combining high precision automated photogrammetric measurement with high precision servo actuator positioning control of a reflector surface using custom optimizing control software to produce a novel, fully automated satellite reflector alignment tuning system. Precise adjustment to the shape of the reflecting surface of an antenna reflector (reflector tuning) can be essential for a satellite reflector antenna to meet electrical performance requirements, usually requiring a shape accurate to within 0.004 inches RMS. The automated reflector tuning may include determining a set of characterization coefficients by precisely measuring the response of the reflector shape to actuator movements, and using the characterization coefficients in a mathematical analysis to determine optimal actuator movements to achieve a required shape of the reflector surface.

Abstract: An modular reflector assembly may include a shell and a support frame. The modular reflector assembly may also include a plurality of support links that mechanically couple the shell to the support frame. The shell may be thermally decoupled from the support frame by the plurality of support links.