CPC G03F 7/0005 (2013.01) [G02B 3/0012 (2013.01); G02B 3/0018 (2013.01); G02B 5/1814 (2013.01); G02B 5/1857 (2013.01)] | 23 Claims |
1. A diffractive optical element including:
a monolithic prism;
an input surface of the monolithic prism configured to receive an input optical signal;
a diffractive surface of the monolithic prism adapted to spatially disperse the input optical beam into a dispersed signal;
an output surface of the prism configured to output the dispersed signal;
wherein the input surface and the diffractive surface are non-parallel; and
wherein the diffractive surface is formed in situ in the same monolithic prism as the input surface and the output surface by a photolithographic technique.
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