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Applied Optics

Applied Optics


  • Vol. 31, Iss. 30 — Oct. 20, 1992
  • pp: 6437–6440

Effect of phase noise in linear modulator systems

C. H. Bulmer, R. P. Moeller, and W. K. Burns  »View Author Affiliations

Applied Optics, Vol. 31, Issue 30, pp. 6437-6440 (1992)

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Measurements of noise levels with semiconductor lasers and long lengths of polarization-preserving fiber, as used in typical linear modulator systems, show noise levels that are ~ 10 dB above thermal noise because of laser phase-to-intensity noise conversion. Data are presented for several launching angles into both polarization-preserving and polarizing fiber. There is good agreement with theory for the variation in noise with an output analyzer angle. To reduce the noise either a single frequency source must be used or the polarization-preserving fiber must be replaced by a conventional single-mode fiber.

© 1992 Optical Society of America

Original Manuscript: August 20, 1991
Published: October 20, 1992

C. H. Bulmer, R. P. Moeller, and W. K. Burns, "Effect of phase noise in linear modulator systems," Appl. Opt. 31, 6437-6440 (1992)

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  1. C. H. Bulmer, “Sensitive, highly linear lithium niobate interferometers for electromagnetic field sensing,” Appl. Phys. Lett. 53, 2368–2370 (1988). [CrossRef]
  2. C. H. Bulmer, A. D. Kersey, M. A. Davis, “Interrogation of an integrated optic modulator over a low-birefringence fiber using polarization tracking,” IEEE Photon. Technol. Lett. 1, 35–37 (1989). [CrossRef]
  3. R. H. Buckley, Hughes Aircraft Co., Rancho Santa Margarita, Calif. 92688 (personal communication, 1990).
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  5. M. Kruger, Laboratory for Physical Sciences, College Park, Md. 20740 (personal communication, 1990).
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  7. B. Moslehi, “Noise power spectra of optical two-beam interferometers induced by the laser phase noise,” IEEE J. Lightwave Technol. LT-4, 1704–1710 (1986). [CrossRef]
  8. W. K. Burns, R. P. Moeller, C. H. Bulmer, A. S. Greenblatt, “Depolarized source for fiber-optic applications,” Opt. Lett. 16, 381–383 (1991). [CrossRef] [PubMed]

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