Optical fiber laser using rare earth-added fiber and wide band light source

A fiber laser and rare earth-doped technology, which is applied in lasers, laser parts, phonon exciters, etc., can solve problems such as inappropriate application
CN1950979AInactive Publication Date: 2007-04-18FURUKAWA ELECTRIC CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
FURUKAWA ELECTRIC CO LTD
Publication Date
2007-04-18
Estimated Expiration
Not applicable · inactive patent

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Abstract

Fiber laser comprising, provided in a resonator, an optical fiber having a normal dispersion, an optical fiber having an abnormal dispersion, a rare earth-added optical fiber as a gain medium, and mode synchronizing mechanism, characterized in that at least a rare earth-added optical fiber is included as an optical fiber having a normal dispersion, and the length of a rare earth-added fiber is set to be smaller than that of an optical fiber having an abnormal dispersion.
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Description

technical field

[0001] The invention relates to a fiber laser and a broadband light source using a rare earth-doped fiber. Background technique

[0002] Pulsed light sources with broadband spectra and low coherence are expected to be applied in various fields, including optical topography and fiber optic sensing. Using light emitting diodes (LEDs) to generate pulses is one method of pulse generation. Low coherent light can be obtained by using amplification of spontaneous emission (ASE) generated from a fiber amplifier using an erbium-doped fiber (EDF) or the like as a light source. However, it is difficult to obtain high-intensity light for LEDs, and the bandwidth spectrum is also limited to the light-generating bandwidth of the fiber amplifier ASE light-dependent amplification medium.

[0003] Here is an example of generating broad-spectrum optical pulses by a mode-locked fiber laser using an erbium-doped fiber (see Non-Patent Reference 1). Broadband oscillations (44 nm...

Claims

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