Transfer standard for the spectral density of relative intensity noise of optical fiber sources near 1550 nm
JOSA B, Vol. 18, Issue 6, pp. 750-761 (2001)
http://dx.doi.org/10.1364/JOSAB.18.000750
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Abstract
We have developed a transfer standard for the spectral density of relative intensity noise (RIN) of optical fiber sources near 1550 nm. Amplified spontaneous emission (ASE) from an erbium-doped fiber amplifier (EDFA), when it is optically filtered over a narrow band (<5 nm), yields a stable RIN spectrum that is practically constant to several tens of gigahertz. The RIN is calculated from the power spectral density as measured with a calibrated optical spectrum analyzer. For a typical device it is −110 dB/Hz, with uncertainty ≤0.12 dB/Hz. The invariance of the RIN under attenuation yields a considerable dynamic range with respect to rf noise levels. Results are compared with those from a second method that uses a distributed-feedback laser (DFB) that has a Poisson-limited RIN. Application of each method to the same RIN measurement system yields frequency-dependent calibration functions that, when they are averaged, differ by ≤0.2 dB.
© 2001 Optical Society of America
[Optical Society of America ]
OCIS Codes
(060.2320) Fiber optics and optical communications : Fiber optics amplifiers and oscillators
(060.2330) Fiber optics and optical communications : Fiber optics communications
(120.4800) Instrumentation, measurement, and metrology : Optical standards and testing
(270.2500) Quantum optics : Fluctuations, relaxations, and noise
Citation
Gregory E. Obarski and Jolene D. Splett, "Transfer standard for the spectral density of relative intensity noise of optical fiber sources near 1550 nm," J. Opt. Soc. Am. B 18, 750-761 (2001)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-18-6-750
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