Fig. 1From: Realization of a polarization-insensitive optical frequency-domain reflectometer using an I/Q homodyne detectiona Optoelectronic schematic of a typical OFDR setup using a polarizing beam splitter (PBS) for polarization diversity. b Schematic of our OFDR implementation using a full I/Q optical homodyne detector, based on a dual-polarization 90° optical hybrid, four balanced photodetectors (BPD) and a data acquisition (DAQ) with four acquisition channelsBack to article page