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The Anritsu The MG9638A Tunable Laser Source is designed to meet excellent wavelength repeatability, it is achieved by self-calibration and improved reliability using a new external cavity technology. The MG9638A utilize an external optical automatic power control (APC) module. The MG9638A uses a semiconductor amplifier providing a high-power output of at least +4 dBm. The coherence control function broadens the linewidth to about 50 MHz eliminating level fluctuations due to interference and permitting accurate measurement. Specifications. Wavelength range: 1500 to 1580 nm. Wavelength setting resolution: 1 pm. Absolute wavelength accuracy: <±0.1 nm. Wavelength stability: <±100 MHz/h. Wavelength repeatability: ±35 pm (80 nm range), Typical: ±7 pm (at ±3 nm, after calibration). Side mode suppression ratio: >40 dB (1520 to 1570 nm), >35 dB (1500 to 1580 nm). Linewidth (typical value): 700 kHz (coherent control: Off), 50 MHz (coherent control: On). Wavelength switching time (typical value): 100 ms/1 nm, 150 ms/10 nm, 500 ms/80 nm. Output 1 Max. output power: >+4 dBm (1520 to 1570 nm), >0 dBm (1510 to 1580 nm), >–5 dBm (1500 to 1580 nm). Output 2 Output power: >–10 dBm. Internal modulation: 200 Hz to 20 kHz (square waveform), Duty: 50%.
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