Anritsu MG9637A

The larger transmission capacity required by multimedia applications has seen increasing use of wavelength division multiplexing (WDM) using optical fiber amplifiers in every field from R&D to commercial operation. As a consequence, key WDM optical devices such as op- tical fiber amplifiers, couplers, and isolators require even higher per- formance and stability. The MG9637A/9638A design meets these requirements through excellent wavelength repeatability, achieved by self-calibration and improved reliability using a new external cavity technology. The MG9637A/9638A utilize an external optical automatic power control (APC) module, the MG9637A has an Lithium Niobate modulator in the APC section to provide excellent output power stability and S/N ratio. The MG9638A uses a semiconductor amplifier providing a high-power output of at least +4 dBm. Both laser sources are ideal for evaluating the wavelength loss characteristics and polarization mode dispersion (PMD) of optical devices (couplers, filters, etc.), as well as the gain and noise figure of optical fiber amplifiers and PMD used in dense wavelength divi- sion multiplexing (DWDM) systems. The power of Output 1 of the MG9637A has been stabilized to ±0.01 dB using the APC function, permitting easy and stable wavelength loss measurement of optical devices. In addition, the wavelength flatness is within ±0.1 dB, enabling high-accuracy measurement of wavelength loss without normalization of the output power of the laser source.