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