Dispersion measurements of mode-locked fiber laser components

Louthain, James A.; Hayduk, Michael J.; Erdmann, Reinhard

doi:10.1117/12.391899

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“…If finer dispersion measurements are required, a more stable and narrower linewidth tunable laser source must be used. [9,12] The nonlinearity results were consistent with MQW structures determined with different methods in other papers. [16] The absorptive nonlinearity can be determined fairly easily using this technique.…”

Section: Discussionsupporting

confidence: 79%

“…At 1550 nm the dispersion is about 8.5 ± 1.6 ps/nm-km and at 1560 nm it is about 10.4 ± 1.6 ps/nm-km. [9] Wavelength (nm) Figure 6. The squares are individual measurements of the dispersion of the erbium-doped fiber using the spectral interference method.…”

Section: Dispersion Measurements Of Erbium-doped Optical Fibermentioning

confidence: 99%

“…The light travels through one port of the 3-dB coupler and reflects off the broad-band mirrors in each arm. [9] The following interference spectrum was collected at the other port and measured by the optical spectrum analyzer where If we expand ß dc in a Taylor series about co = co a corresponding to A = A 0 and collect all constant terms into an unknown phase term fa, ${(0) becomes…”

Section: Dispersion Measurements Of Erbium-doped Optical Fibermentioning

confidence: 99%

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Dispersion and Nonlinearity Characterization of a Mode-Locked Erbium-Doped Fiber Laser

Louthain¹,

Hayduk²

2001

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Public reporting burden for this collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing the collection of information. 12a. DISTRIBUTION AVAILABILITY STATEMENTAPPROVED FOR PUBLIC RELEASE; DISTRIBUTION UNLIMITED. 12b. DISTRIBUTION CODE ABSTRACT (Maximum 200 words)This report describes the results of dispersion and nonlinearity experiments of the components required for the development of picosecond passively mode-locked fiber lasers. First, we will summarize the interferometric dispersion measurement technique and results for short lengths of fiber (< 1 meter). We measured dispersion of standard fiber at 16.9 +/-1.4 ps/nm and Er-doped fiber at 8.5 +/-1.6 ps/nm at 1550 nm. Next, we measured the group delay of three chirped Bragg gratings using a phase difference method and a tunable laser. These chirped Bragg gratings served as one of the mirrors in the linear fiber laser cavity. Finally, we measured the nonlinearity of five different multiple quantum well saturable absorbers using a z-scan technique. The saturable absorbers served as the mode-locking mechanism in the passively mode-locked fiber laser. The values of the nonlinear absorption ranged from 1 to 3 cm/W. We also measured the refractive nonlinearity of one of the MQW saturable absorbers to be about -4 x 10 cm/W.

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Section: Discussionsupporting

confidence: 79%

Section: Dispersion Measurements Of Erbium-doped Optical Fibermentioning

confidence: 99%

Section: Dispersion Measurements Of Erbium-doped Optical Fibermentioning

confidence: 99%

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