In telecommunications, an electro-optic modulator is an optical device in which a signal-controlled element is used to modulate a beam of light. The modulation may be imposed on the phase, frequency, amplitude, or direction of the modulated beam. Modulation bandwidths extending into the gigahertz[?] range are possible with the use of laser-controlled modulators.
...
In the human male, the urethra is about 8 inches (200 mm) long and opens at the end of the penis.
Medical problems of the urethra:
Hypospadias[?] is a form ...