A robust charge-coupled device (CCD) photoelectric autocollimator for outdoor use is designed and demonstrated. The infl......

We project a compact T-branch beam splitter with a micron scale using a two-dimensional (2D) photonic crystal (PC). For ......

Polarization independent bends and beam splitters for transverse electric (TE) and transverse magnetic (TM) polarization......

We present a simple but effective method for small-angle measurement based on optical feedback interferometry (or laser ......