Optical modulators are devices that manipulate the properties of light, such as amplitude, phase, or polarization, to encode information. They operate by varying the intensity of light passing through them, effectively turning optical signals on and off or modifying them to carry. Optical modulators and switches are cornerstone technologies in the field of photonics, enabling the control of light in optical networks and systems. For short-wavelength (830 - 1090 nm) applications, we offer fiber-coupled intensity modulators that support speeds up to 40 GHz and phase modulators that support speeds up to 10 GHz. The beam may be carried over free space, or propagated through an optical waveguide (optical fibre).