Multi-mode fiber amplifier
First Claim
Patent Images
1. An optical apparatus comprising:
- a length of multi-mode optical fiber comprising a gain medium and configured to propagate a fundamental mode;
a length of single mode optical fiber configured to propagate a single mode; and
a splice between the length of multi-mode optical fiber and the length of single-mode optical fiber,wherein the single mode of the length of single mode optical fiber is matched to the fundamental mode of the length of multi-mode optical fiber.
0 Assignments
0 Petitions
Accused Products
Abstract
A laser utilizes a cavity design which allows the stable generation of high peak power pulses from mode-locked multi-mode fiber lasers, greatly extending the peak power limits of conventional mode-locked single-mode fiber lasers. Mode-locking may be induced by insertion of a saturable absorber into the cavity and by inserting one or more mode-filters to ensure the oscillation of the fundamental mode in the multi-mode fiber. The probability of damage of the absorber may be minimized by the insertion of an additional semiconductor optical power limiter into the cavity.
-
Citations
21 Claims
-
1. An optical apparatus comprising:
-
a length of multi-mode optical fiber comprising a gain medium and configured to propagate a fundamental mode; a length of single mode optical fiber configured to propagate a single mode; and a splice between the length of multi-mode optical fiber and the length of single-mode optical fiber, wherein the single mode of the length of single mode optical fiber is matched to the fundamental mode of the length of multi-mode optical fiber. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
-
-
20. An optical apparatus for amplifying light, the apparatus comprising:
-
a length of multi-mode optical fiber, said multi-mode optical fiber including a gain medium; an output for receiving amplified light from said length of multi-mode optical fiber; an energy source for exciting said gain medium; and an input for providing a beam of light to be amplified within said length of multi-mode fiber, said input comprising a near-diffraction limited laser source, said input optically coupled to said length of multi-mode fiber, said length of multi-mode fiber providing substantially single mode light at the output of said apparatus.
-
-
21. A light amplifier comprising:
-
a length of multi-mode optical fiber, said multi-mode optical fiber including a gain medium; an energy source for exciting said gain medium; and an input for providing a near-diffraction limited beam of light to be amplified within said length of multi-mode fiber, said input optically coupled to said length of multi-mode fiber to provide substantially diffraction limited light at the output of said amplifier, said input comprising a near-diffraction limited laser source.
-
Specification