Coherent light generators – Optical fiber laser
Patent
1996-02-14
1997-12-16
Bovernick, Rodney B.
Coherent light generators
Optical fiber laser
372 30, 372700, H01S 330
Patent
active
056993714
ABSTRACT:
A light pulse generator is disclosed comprising an optical main-loop, a pumped-light source, a delay optical fiber, and an optical switch controller. The optical main-loop circulates a light and includes a light mixer, a light isolator, an erbium-doped optical fiber, an optical switch, a light divider, and an optical fiber coupler. The pumped-light source generates a pumped-light and introduces the pumped-light into the optical main-loop through the light mixer. The terminals of the delay optical fiber are connected to the optical fiber coupler so as to form an optical sub-loop for spreading a pulse width of a light pulse circulating in the optical main-loop. The optical switch controller switches the optical switch to an ON-state. As a result, a positive feedback amplification is carried out in the optical main-loop and an output light pulse having a sufficiently long pulse width and sufficiently high power is picked up from the optical loop through the light divider.
REFERENCES:
patent: 5233619 (1993-08-01), Furuhashi et al.
patent: 5309455 (1994-05-01), Adachi et al.
patent: 5519526 (1996-05-01), Chua et al.
Enomoto Yoshitaka
Handa Ryouji
Tomita Nobuo
Ando Electric Co. Ltd.
Bovernick Rodney B.
Nippon Telegraph and Telephone Corporation
Wise Robert E.
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