G - Physics – 02 – B
Patent
G - Physics
02
B
G02B 5/18 (2006.01) G02B 6/34 (2006.01) G02F 1/01 (2006.01)
Patent
CA 2134958
The spectral and temporal form of radiant energy traveling down optical fibers is important in many fields, including communications and sensing. The spectral distribution and centre wavelength of short optical pulses is of particular importance. In the communication field the information carrying capacity of an optical fiber can be limited by the dispersion experienced by short pulses as they propagate along an optical fiber. Chirped fiber optic intracore Bragg gratings can be used to compensate for this dispersion. However, a grating with a different degree of chirp would be required for each particular communication system. We have invented a method and apparatus for controlling the detailed strain field imposed on a guided-wave Bragg grating. This precise control of the infra-grating strain distribution allows the grating to be tuned over a broad spectral range or chirped in a manner that permits it to compensate for a wide range of dispersion with or without a shift in the grating centre wavelength. In addition, precise control of the strain distribution along a grating can be used to manufacture a variety of spectral filters.
Alavie A. Tino
Huang Shangyuan
Leblanc Michel
Maaskant Robert
Measures Raymond Massey
Alavie A. Tino
Huang Shangyuan
Jds Uniphase Corporation
Leblanc Michel
Maaskant Robert
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