Keysight (Agilent) 81651A CALIBRATION and Keysight (Agilent) 81651A REPAIR
The Keysight (Agilent) 81651A is currently in stock and available for purchase on our  Sales Page
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A calibration by Custom-Cal is performed by engineers with extensive OEM experience. We have the expertise and the necessary standards to perform the Keysight (Agilent) 81651A Calibration, onsite calibration may be available. We specialize in quick turnaround times and we can handle expedited deliveries upon request.

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   Keysight (Agilent) 81651A   Description / Specification:   Spec Sheet 
Keysight (Agilent) 81651A 1550 nm Fabry Perot Laser Source Module

The Agilent 81651A Standard Source Module (Fabry-Perot Laser) is insensitive to back reflections, and is stabilized for short and long term applications. It is for use with Agilent 8163A/B Lightwave Multimeter, Agilent 8164A/B Lightwave Measurement System, and Agilent 8166A/B Lightwave Multichannel System. Specifications. Center Wavelength: 1550 nm ±15 nm. Fiber type: Single-mode 9/125 µm. Spectral bandwidth (rms): < 4.5 nm. Output Power: >0 dBm. Short term (15 min) CW power stability: <±0.005 dB typically <±0.003 dB with coherence control active. Long term (24 hr) CW power stability: typically <±0.03 dB. To back reflection (RL >=14 dB): Typical ± 0.003 dB. Internal digital modulation mode: 270 Hz, 330 Hz, 1 kHz, 2 kHz and free selection 200 Hz to 10 kHz. All output signals are pulse shaped, duty cycle 50%. Internal coherence control for linewidth broadening.



 

Standard Calibration $255.00 *
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*This is a Web introductory price for one calibration of the Keysight (Agilent) 81651A. Price does not in most cases include measurement performance data. Pricing does include NIST traceable calibration and issue of a calibration certificate and calibration label. Pricing may vary slightly due to volume and location of laboratory supporting calibration. Volume pricing may apply. On-site fees may apply depending on logistics, location and volume of work to be completed during the visit.


Related Optical Terms and Definitions. For a complete list go to our  Terms and Definitions Page.

Coherence Length
Average distance over which superimposed waves lose their phase relationships

Linewidth
Linewidth is the width of a spectral line in terms of wavelength, wave number and frequency.

Power Flatness Versus Wavelength
When changing the wavelength at constant power setting and recording the differences between actual and displayed power levels, the power flatness is ± half the span (in dB) between the maximum and the minimum of the measured power levels.

Spectral Width
Spectral Width is the wavelength interval over which the magnitude of all spectral components is equal to or greater than a specified fraction of the magnitude of the component having the maximum value. In optical communications applications, the usual method of specifying spectral width is the full width at half maximum. This is the same convention used in bandwidth, defined as the frequency range where power drops by less than half (at most -3 dB).

Telecom Bands
Optical fiber communications typically operate in a wavelength region corresponding to one of the following Bands. O Band (original): 1260–1360 nm. E Band (extended): 1360–1460 nm. S Band (short wavelengths): 1460–1530 nm. C Band (conventional): 1530–1565 nm. L Band (long wavelengths): 1565–1625 nm. U Band (ultralong wavelengths): 1625–1675 nm


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