Optical: systems and elements – Optical modulator – Light wave temporal modulation
Patent
1994-01-07
1995-11-28
Lerner, Martin
Optical: systems and elements
Optical modulator
Light wave temporal modulation
359484, 359495, 359497, 385 11, 385 18, G02B 530, G02B 2728, G02F 109, G02F 1095
Patent
active
054713404
ABSTRACT:
In order to reduce the number of components and avoid relatively long optical lengths, a non-reciprocal device such as a circulator comprises a plurality of ports at one end of the device, a mirror at an opposite end of the device, and a series of optical elements disposed between the ports and the mirror. The optical elements include a first element which spatially separates first and second orthogonally-polarized components of a light beam leaving one of said plurality of ports and passing through the device in a forward direction, and recombines the first and second components as they pass through the device in a reverse direction after reflection. A second optical element, disposed between the separating and recombining element and the mirror, selectively displaces and rotates the light beam components such that the recombined light beam is coupled to a different one of the plurality of ports.
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Cheng Yihao
Duck Gary S.
Adams Thomas
JDS Fitel Inc.
Lerner Martin
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