We present a technique to measure the tensor components of the Raman gain spectrum in a short piece of optical fiber. Using this approach, we obtain results for the frequency dependence of the Raman gain tensor in a silica-based fiber for Raman shifts from less than 1 to over 15 THz. We compare these data with measurements of spontaneous Raman scattering in bulk silica and find good agreement for the depolarization ratio, including in the low-frequency regime.
© 2006 Optical Society of America
Fiber Optics and Optical Communications
Original Manuscript: June 3, 2005
Revised Manuscript: October 5, 2005
Manuscript Accepted: October 11, 2005
Idan Mandelbaum, Maxim Bolshtyansky, Tony F. Heinz, and Angela R. Hight Walker, "Method for measuring the Raman gain tensor in optical fibers," J. Opt. Soc. Am. B 23, 621-627 (2006)