The OL-MZI-1300 from LD-PD Inc is a Mach-Zehnder Interferometer that operates at a wavelength of 1225 nm - 1375 nm. It has a free spectrum range of 103.3 GHZ and saturated optical power of 50 mW (at 1300 nm). This interferometer has a balance detector bandwidth of 200 MHz and an arm difference of 2 mm. It uses SMF-28 polarisation mode fiber and has an InGaAs/PIN detector that operates at a wavelength of 800 nm - 1700 nm. This interferometer requires a DC supply voltage of 5 V and consumes up to 0.5 A of current. It supports FC/APC & SMA connectors and is available in a compact module that measures 120 mm x 100 mm x 25 mm. This interferometer is ideal for optical coherence tomography (OCT) & other coherent field applications.