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The Ando AQ4321D Tunable Laser Source Specifications. Wavelength range: 1520 to 1620 nm. Wavelength set resolution: 0.001nm. Wavelength stability: ±100 MHz/h (±0.8 pm/h) (typ.). Absolute wavelength accuracy: ±0.1nm, ±0.015 nm, ±0.01 nm (typ.). Relative wavelength accuracy: ±0.01 nm (typ.). Spectral width (Narrow): 200 kHz (typ.) (1 MHz or less). Spectral width (Wide): 200 MHz (typ.) (100 MHz or more). Side-Mode Suppression Ratio: 50 dB or more (optical output: +6 dBm, 1590 nm). Optical output +6 dBm or more, 1560 to 1600 nm; +7 dBm (typ.) peak. Settable optical output range: 20 dB or more (0.1 dB steps, at peak wavelength). Optical output stability: 5 min, ±0.01dB or less; 1 hr, ±0.05dB or less; 8 hr, ±0.3dB or less. Optical output accuracy: ±1dB or less. Optical output reproducibility: ±0.04 dB, optical output fixed. Optical output level flatness: ±0.1 dB ((1540 to 1600 nm)). RIN: -145dB/Hz (typ.). Internal modulation (CHOP): Set frequency 0.2 to 300kHz; Set resolution 10Hz, 100Hz, 1kHz, 10kHz, 100kHz. External modulation (CHOP): Set frequency 0.2 to 300kHz. Direct modulation: Modulation rate 5% or less (Modulation frequency: 100 kHz to 300 MHz, modulation input level: 0 dBm or less). Wavelength sweep speed: 100nm/sec (Max.). Applicable optical fiber: SMF (10/125µm).
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