SBS suppression using a depolarized source for high power fiber applications

• Published in: Journal of lightwave technology Vol. 14; no. 3; pp. 417 - 422
• Main Authors: Howerton, M.M., Burns, W.K., Gopalakrishnan, G.K.
• Format: Journal Article
• Language: English
• Published: New York, NY IEEE 01-03-1996; Institute of Electrical and Electronics Engineers
• Subjects: Applied sciences; Brillouin scattering; Circuit properties; Electric, optical and optoelectronic circuits; Electronics; Exact sciences and technology; Fiber nonlinear optics; Frequency; High speed optical techniques; Integrated optics. Optical fibers and wave guides; Optical and optoelectronic circuits; Optical fiber devices; Optical fiber polarization; Optical modulation; Optical scattering; Optical sensors; Phase modulation; Stimulated Brillouin scattering; Noise reduction; Performance characteristic; Phase modulator; Radiation source; Lithium Niobates; Optical fiber
• ISSN: 0733-8724; 1558-2213
• DOI: 10.1109/50.485602

A depolarized source for fiber applications is demonstrated using a traveling wave LiNbO/sub 3/ phase modulator. The source suppresses stimulated Brillouin scattering (SBS) in the fiber when operated at high drive frequencies, enabling more power to be delivered to a remote location. The threshold for SBS is examined in detail using optical powers up to 150 mW and drive frequencies up to 4 GHz. A resonant enhancement technique is demonstrated which reduces the drive power requirement for frequencies <2 GHz by up to 7.6 dB.