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The HP 8168A tunable laser source is a basic tool for characterizing and testing optical amplifiers and components. The HP 8168A operates in the 1550 nm window. A built-in side mode filter ensures that a true single-mode laser line is generated for every wavelength point, eliminating any possible multimoding. A 0.001 nm resolution also makes these tunable lasers valuable tools for heterodyne measurements and coherent applications. Both tunable lasers provide independent control of output power and wavelength on a what-you-set-is-what-you-get basis. Wavelength scans, which require an output power that is stable over time and flat across all wavelengths, can be performed reliably, accurately, and quickly. Specifications. Wavelength Range: 1500 nm to 1565 nm. Absolute Wavelength Accuracy: <± 0.1 nm. Relative Wavelength Accuracy: ± 0.05 nm (lypical ± 0.02 nm). Wavelength Resolution: 0.001 nm, 125 MHz at 1550 nm. Wavelength Stability (typical over 1 h at constant temp.): <± 100 MHz. Wavelength Repeatability: ± 0.05 nm (typical: ± 0.02 nm). Sidemode Suppression Ratio: > 40 dB. Relative Intensity Noise RIN (typical): 145 dB/Hz. Linewidth (typical): < 100 kHz. Output Power: > -4 dBm to -10 dBm. Power Linearity: <± 0.1 dB. Power Stability (over 1 h): < ± 0.05 dB (Typical 0.01 dB). Power Repeatability (typical): < ± 0.04 dB. Output Isolation (typical): 60 dB. Return Loss (typical): 60 dB. Modulating Frequency: 250 Hz - 300 kHz (squarewave). Built-in HPIB. Option 003 Built-in Variable Attenuator.
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