Linearity Characteristics Of DFB Laser Diodes At High Output Optical Powers (1989)

By Ernest M. Kim, S. Lee Cummings, and Mark E. Tucker, TACAN Corporation Thomas J. Gibbs, Raynet Corporation

Long wavelength Distributed Feedback (DFB) laser diode linearity characteristics under modulation at high output optical powers are investigated. Chirp, emission wavelength, and thermal characteristics have been measured. It was found that the laser diodes tested had "sweet-spots" of average power which yielded the highest linearity. Second order distortion was reduced dramatically for low temperatures.

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