What is an Optical Delay Line (ODL)?
An Optical Delay Line (ODL) is an electric-optic-electric instrument. It performs fixed time delay(s), between 0.01 and 250 μsec for RF signals up to 40GHz and more. The optical signal is transmitted into a long single-mode fiber, usually at a 1.55 micron wavelength or similar. Passing through the fiber and a series of optical switches, the…