The INT-MSI-1300 from Thorlabs Inc is a Michelson Interferometer that operates at a wavelength of 1250 nm - 1350 nm. It has a saturation power of 70 µW and an output bandwidth of up to 15 MHz (at 3 dB). This interferometer has an InGaAs PIN detector with a wavelength range of 800 - 1700 nm and maximum responsivity of 1 A/W. It has an insertion loss of less than 3 dB (660 nm IN to PROBE) and 4.2 dB (1300 nm IN to SAMPLE ARM & 1300 nm IN to REFERENCE ARM). This interferometer has an integrated balanced signal detection with active aliasing filter and a fiber coupler network.
The INT-MSI-1300 has a trans-impedance gain of 51 kV/A and an output impedance of 50 Ohms. It has a path length difference below 0.1 mm and DC-offset below ±5 mV. This interferometer has a Corning SMF-28TM fiber that supports FC/APC connectors and SMA output ports. It requires an AC supply voltage of 100/120/230 V and a DC supply voltage of ± 12 V. This interferometer consumes 250 mA of current and 20 mW of power. It is available in a compact package that measures 120 mm (W) x 80 mm (D) x 21 mm (H) and is designed to be used inside a swept source Fourier domain OCT system for common-path OCT applications.
