Optical waveguides – Polarization without modulation
Reexamination Certificate
2005-12-06
2005-12-06
Lee, John R. (Department: 2881)
Optical waveguides
Polarization without modulation
C385S015000, C250S227170, C250S227270
Reexamination Certificate
active
06973223
ABSTRACT:
In a device (100) for continuously varying the extinction ratio, ER, a laser diode (102) is connected to a first end of a PZ fiber (108). At a second end, the PZ fiber is connected to a connector (110). At the other end of the connector a PM fiber (106) is connected. The two fibers meet in the connector, which means that opposite end facets of the fibers are located at a very close distance of each other. A rotation is produced by a rotator (104), mechanically coupled to the connector. The device can be used for: selecting a desired ER of the PM fiber; achieving high accuracy of angular alignment between the principal axes of two PM fibers (106, 506); evaluating the quality of angular alignment of a splice between two PM fibers made by a splicer; and setting the adjustment/calibration of a PM fiber.
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Adeback Tomas
Huang Wei-Ping
Magnusson Jan
Gurzo Paul M.
Lee John R.
Telefonaktiebolaget L M Ericsson (publ)
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