SYSTEM AND METHODS FOR A MULTIWAVELENGTH ERBIUM-DOPED FIBER SINGLE RING CAVITY LASER
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United States of America Patent
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Issued Date -
Oct 3, 2024
app pub date -
Mar 30, 2023
filing date -
Mar 30, 2023
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Abstract
A multiwavelength erbium-doped fiber laser (EDFL) including a single ring cavity, a wave division multiplexer (WDM) coupler, and a pump laser. The pump laser injects a pump laser beam into the single ring cavity. The multiwavelength EDFL includes an erbium doped fiber, an optical isolator (ISO), and a fiber coupler. The erbium doped fiber amplifies the pump laser beam and generates an amplified laser beam. The fiber coupler divides the amplified laser beam into an output laser beam and a laser beam retained in the single ring cavity. The multiwavelength EDFL includes a tunable optical filter (TOF) and an out of cavity comb filter (CF) having a dual-drive Mach-Zehnder modulator (DD-MZM). The TOF receives the laser beam retained in the single ring cavity and filter the retained laser beam to a desired wavelength. The DD-MZM receives the output laser beam and divides the output laser beam into multiple wavelengths.
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