Title :
Improved lightwave synthetic noise generator using noise injection and triangular modulation
Author :
Van den Brink, Rob F M
Author_Institution :
PTT Res. Neher Labs., Leidschendam, Netherlands
fDate :
4/1/1994 12:00:00 AM
Abstract :
Synthetic noise generators facilitate the generation of white noise in photo diodes. They simplify noise measurements on lightwave receivers significantly, compared to direct methods, shot noise methods, spontaneous emission methods, and laser-RIN methods. Previously reported generators required more than 1 km fiber delay length, to smooth the synthetic spectrum into a white noise spectrum. This letter proposes injection of electrical noise and triangular FM modulation to enable the use of narrow line width lasers in combination with short delay length.<>
Keywords :
noise generators; optical modulation; optical receivers; photodiodes; white noise; 1 km; electrical noise injection; fiber delay length; laser-RIN methods; lightwave receivers; lightwave synthetic noise generator; narrow line width lasers; noise injection; noise measurements; photo diodes; short delay length; shot noise methods; spontaneous emission methods; synthetic spectrum; triangular FM modulation; triangular modulation; white noise; white noise spectrum; Delay; Fiber lasers; Frequency modulation; Gain measurement; Laser beams; Laser noise; Noise generators; Noise level; Noise measurement; White noise;
Journal_Title :
Photonics Technology Letters, IEEE
