Optical: systems and elements – Deflection using a moving element – Using a periodically moving element
Patent
1992-12-04
1994-06-07
Chilcot, Jr., Richard E.
Optical: systems and elements
Deflection using a moving element
Using a periodically moving element
359143, 359152, 359156, 359484, 385 11, H04B 1024, G02B 530
Patent
active
053194837
ABSTRACT:
There is provided an optical circulator (16) for bidirectional communication on a fiber optic communication transmission system. A reflection rhomb (17) includes a polarizing thin film (26) and an inclined, internally reflecting end surface (22). A first birefringent crystal (28) is disposed against the reflection rhomb (17). A quartz rotator (34) is disposed against the opposite side of the first birefringent crystal (28). A Faraday rotator (40) is disposed against the opposite side of the quartz rotator (34). A second birefringent crystal (46) is disposed against the opposite side of the Faraday rotator (40). The components of optical circulator (16) cooperate such that light transmitted into port 1 exits from port 2, and light transmitted into port 2 exits from port 3.
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Baker Phillip E.
Krasinski Jerzy S.
Pearson Gary W.
Bd. of Regents, Oklahoma State University
Chilcot Jr. Richard E.
Negash K.
Williams Telecommunications Group, Inc.
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