11. Commonly blazed gratings are manufactured in so called Littrow configuration. 12. High contrast gratings have been employed in many optoelectronic devices. 13. On the other hand, gratings have significant intensity losses. 14. The original high-resolution diffraction gratings were ruled. 15. The construction of high-quality replicas of ruled or holographic master gratings . 16. The study of polychromatics is particularly useful in the production of diffraction gratings . 17. Blazed gratings can also be realized as transmission gratings. 18. Blazed gratings can also be realized as transmission gratings . 19. Colours could be produced by various technologies like different light sources or gratings . 20. He first demonstrated Fiber Bragg gratings and their applications in multiplexers and demultiplexers.
