H - Electricity
01
S
H01S 3/067 (2006.01) G02B 6/02 (2006.01) G02B 6/036 (2006.01)
Patent
CA 2370962
A long cycle grating (8) by which an excitation light propagated through the 2nd core (4) of a double-core type optical fiber composed of a 1st core (2) and the 2nd core (4) formed on the outer circumference of the 1st core (2) is guided into the 1st core (2) is formed on the 1st core (2) to improve an excitation efficiency.
L'invention concerne un réseau de diffraction à cycle long (8) par lequel une lumière d'excitation propagée à travers la deuxième âme (4) d'une fibre optique à double âme présentant une première âme (2) entourée d'une deuxième âme (4) et guidée à l'intérieur de la première âme (2) est formée sur cette dernière afin d'améliorer l'efficacité d'excitation.
Imamura Kazuo
Nakai Tadahiko
Sudo Yasuhide
Yoshida Minoru
G. Ronald Bell & Associates
Mitsubishi Cable Industries Ltd.
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