The Agilent 11980A is a Mach-Zehnder interferometer of fixed delay. Used with an Agilent 71400 series or Agilent 83810B lightwave signal analyzer, it allows you to measure chirp and frequency modulation (FM) on DFB lasers. Traditional measurements of laser linewidth on single-line lasers can also be made.

• Linewidth Measurements

• Chirp/FM Characteristic Measurements

• Wavelength from 1250 nm to 1600 nm

• Wavelength Range 1250 to 1600 nm

• Optical Insertion Loss < 9 dB

• Delay Time 25 µsec

• Linewidth (minimum) <100 kHz

• Maximum Input Power 250 mW