The retarded Raman response function of a medium has an extensive contribution on spectral pulse broadening. In almost all theoretical researches have done on the topic of spectral broadening of the propagated
P. Agrawal, “Raman response function for silica fibers”, Opt. Lett. 31 (21), 3086 (2006); https://doi.org/10.1364/OL.31.003086cited by [11] D. J. Spence and R. P. Mildren, “Mode locking using stimulated Raman scattering”, Opt. Express 15 (13), 8170 (2007); https://doi....
摘要: The commonly used Lorentzian Raman response function does not properly account for the shoulder in the Raman gain spectrum originating from the Boson peak. We propose an accurate model for the Raman response in silica fibers.关键词:
P. Agrawal, “Raman Response Function for Silica Fibers,” Opt. Lett. 31(21), 3086–3088 (2006). Article ADS Google Scholar S. A. Babin, D. V. Churkin, A. E. Ismagulov, et al., “Four-Wave-Mixing-Induced Turbulent Spectral Broadening in a Long Raman Fiber Laser,” JOSA B. ...
The Raman gain spectrum has been measured for silica glasses as well as silica-based fibers [10–18]. Figure 9.3 shows the Raman gain coefficient for bulk silica as a function of the frequency shift Ω when the pump and signal are copolarized (solid curve) or orthogonally polarized (dotted...
Ikeda, M., “Stimulated Raman Amplification Characteristics in Long Span Single-Mode Silica Fibers,” Optics Communications, vol. 39, No. 3, pp. 148-152, Jun. 15, 1981.Stimulated Raman amplification characteristics in long span single-mode silica fibers. M. Ikeda. Optics Communication . 1981...
S2c). Briefly, self-phase modulation can induce self-balanced spectral splitting of picosecond Stokes beam propagating in standard single-mode silica fibers, resulting in two required wavelength-shifted Stokes beams. Second, SREF signal shall better be detected by single-photon counters rather than ...
in common single-mode fibers, the fiber attenuation of incident light at 1550 nm is 0.2 dB/km and that at 1310 nm is 0.4 dB/km68. Therefore, when this intensity ratio is directly used for temperature demodulation, a measurement error will inevitably be introduced., which is als...
The Raman gain coefficient gr for typical silica fibers extends over a relatively large frequency range (e.g., up to 40 THz) with a broad peak centered at approximately 13.2 THz (this corresponds to 440 cm−1). The relatively large frequency range results from the amorphous nature of the...
Referring to FIG. 1(b), a graphical illustration of the Raman gain spectrum in an optical fiber is shown. Here, the normalized gain in an optical fiber is depicted as a function of the frequency shift created by the Raman effect. Due to the amorphous nature of silica fibers, the Raman ...