Closely spaced dual-wavelength fiber laser using an ultra narrow bandwidth optical filter for low radio frequency generation
A dual-wavelength (DW) fiber laser with a closely spaced single longitudinal mode (SLM) output is proposed and demonstrated. The proposed fiber laser utilizes a conventional fiber Bragg grating with a center wavelength of about 1546.8 nm in conjunction with an ultranarrow bandwidth tunable optical...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
The Optical Society
2014
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/84294/1/Closely%20spaced%20dual-wavelength%20fiber%20laser%20using%20an.pdf http://irep.iium.edu.my/84294/ https://www.osapublishing.org/ao/abstract.cfm?uri=ao-53-19-4123 |
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| Summary: | A dual-wavelength (DW) fiber laser with a closely spaced single longitudinal mode (SLM) output is
proposed and demonstrated. The proposed fiber laser utilizes a conventional fiber Bragg grating with
a center wavelength of about 1546.8 nm in conjunction with an ultranarrow bandwidth tunable optical
filter to generate the desired DW SLM output. Observations with a very high resolution optical spectrum
analyzer, which was capable of achieving resolutions up to 0.16 pm, revealed detailed spectral characteristics not characteristically seen before. A channel spacing of up to 58 nm was realized, and spacing as
small as 2 pm was achieved. The minimum channel spacing and its resulting beat frequency are the narrowest observed yet to the best of our knowledge for a DW fiber laser at room temperature. © 2014 Optical
Society of America
OCIS codes: (060.0060) Fiber optics and optical communications; (060.2410) Fibers, erbium;
(060.2840) Heterodyne; (060.3735) Fiber Bragg gratings; (060.5625) Radio frequency photonics. |
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