Optical: systems and elements – Deflection using a moving element – Using a periodically moving element
Patent
1991-03-11
1992-11-24
Lerner, Martin
Optical: systems and elements
Deflection using a moving element
Using a periodically moving element
359572, 359615, 359868, 372102, 372700, G02B 518, G02B 7185, H01S 308
Patent
active
051668181
ABSTRACT:
For use, e.g., in the compensation of frequency dispersion in the course of transmission of an optical signal, a pulse-shaping device is provided with a suitably shaped nonplanar mirror (16). When spatially spread-out frequency components--produced, e.g., by a grating (14)--are reflected from such mirror, a frequency-dependent phase shift is introduced; for example, such phase shift may be a third-order function of frequency. Upon recombination of frequencies, a shaped pulse is obtained. Furthermore, third-order compensation can be used to compress amplified light pulses, e.g. as produced by a semiconductor gain medium (80, 81).
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Chase Eugene W.
Delfyett, Jr. Peter J.
Heritage Jonathan P.
Thurston Robert N.
Bell Communications Research Inc.
Guenzer Charles S.
Lerner Martin
Suchyta Leonard Charles
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