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Journal of Lightwave Technology

Journal of Lightwave Technology


  • Vol. 27, Iss. 22 — Nov. 15, 2009
  • pp: 5127–5133

Suppression of Phase-Induced Intensity Noise in Optical Delay-Line Signal Processors Using a Delayed Differential Technique

Erwin Hoi Wing Chan and Robert A. Minasian

Journal of Lightwave Technology, Vol. 27, Issue 22, pp. 5127-5133 (2009)

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In this paper, a new technique that can suppress the dominant phase-induced intensity noise (PIIN) in general delay-line signal processor structures is presented. It is based on a delayed differential technique using a complementary output electro-optic modulator together with appropriate time delay and polarization effects to cancel the PIIN noise at the filter passband frequency. Experimental results using the delayed differential technique demonstrate a PIIN noise reduction of 19 dB at the filter passband for an amplified recirculating delay-line bandpass filter, together with a fourfold increase in the free spectral range and a 10 dB increase in the bandpass filter rejection level.

© 2009 IEEE

Erwin Hoi Wing Chan and Robert A. Minasian, "Suppression of Phase-Induced Intensity Noise in Optical Delay-Line Signal Processors Using a Delayed Differential Technique," J. Lightwave Technol. 27, 5127-5133 (2009)

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