Sensitive Orbital Angular Momentum (OAM) Monitoring by Using Gradually Changing-Period Phase Grating in OAM-Multiplexing Optical Communication Systems

We propose specially designed gradually changing-period phase grating (GCPPG) and used it to monitor the orbital angular momentum (OAM) light beam. Based on GCPPG, zero-order diffraction can be eliminated, and the diffraction power can be concentrated to the first-order diffraction. In this way, the detection sensitivity of the OAM beam can be significantly improved.

[1]  Jiao Lin,et al.  Synthesis of multiple collinear helical modes generated by a phase-only element. , 2006, Journal of the Optical Society of America. A, Optics, image science, and vision.

[2]  N. Tanaka,et al.  Measuring the orbital angular momentum of electron vortex beams using a forked grating. , 2013, Physical review letters.

[3]  Lei Wang,et al.  Sorting and detecting orbital angular momentum states by using a Dove prism embedded Mach–Zehnder interferometer and amplitude gratings , 2011 .

[4]  Jo Verbeeck,et al.  Measuring the Orbital Angular Momentum of Electron Beams , 2014, 1401.7211.

[5]  Siqi Yan,et al.  Double metal subwavelength slit arrays interference to measure the orbital angular momentum and the polarization of light. , 2014, Optics letters.

[6]  Guang-Can Guo,et al.  Detecting orbital angular momentum through division-of-amplitude interference with a circular plasmonic lens , 2013, Scientific reports.

[7]  S. Barnett,et al.  Measuring the orbital angular momentum of a single photon. , 2002, Physical review letters.

[8]  Changyuan Yu,et al.  Massive individual orbital angular momentum channels for multiplexing enabled by Dammann gratings , 2015, Light: Science & Applications.

[9]  Federico Capasso,et al.  Holographic detection of the orbital angular momentum of light with plasmonic photodiodes , 2012, Nature Communications.

[10]  Chunqing Gao,et al.  Measuring OAM states of light beams with gradually-changing-period gratings. , 2015, Optics letters.

[11]  Rajpal S. Sirohi,et al.  Single-slit diffraction of an optical beam with phase singularity , 2009 .

[12]  A. Willner,et al.  Terabit-Scale Orbital Angular Momentum Mode Division Multiplexing in Fibers , 2013, Science.

[13]  A. Willner,et al.  Terabit free-space data transmission employing orbital angular momentum multiplexing , 2012, Nature Photonics.

[14]  W. C. Soares,et al.  Unveiling a truncated optical lattice associated with a triangular aperture using light's orbital angular momentum. , 2010, Physical review letters.

[15]  R R Alfano,et al.  Double-slit interference with Laguerre-Gaussian beams. , 2006, Optics letters.

[16]  A. Willner,et al.  Phase-shift interference-based wavefront characterization for orbital angular momentum modes. , 2013, Optics letters.