Figure 3: Broadband low power parametric wavelength conversion in USRN waveguides. | Nature Communications

Figure 3: Broadband low power parametric wavelength conversion in USRN waveguides.

From: Pushing the limits of CMOS optical parametric amplifiers with USRN:Si7N3 above the two-photon absorption edge

Figure 3

(a) Generated four-wave-mixing spectra as the signal wavelength is tuned from 1,560 to 1,610 nm using a pump located at 1,555 nm. Solid lines denote the four-wave-mixing spectra for a signal located at 1,560 (brown), 1,565 (red), 1,570 (cyan), 1,575 (green), 1,580 (blue), 1,585 (yellow), 1,590 (orange), 1,595 (purple) and 1,600 nm (black). (b) Calculated (blue solid line) and measured (red squares) conversion efficiency as a function of signal wavelength, using a pump located at 1,555 nm. (c) Measured (red squares) and calculated (black solid line) idler wavelength as a function of the signal wavelength. (d) Four-wave mixing using a pump at 1,535 nm and signal at 1,620 nm representing conversion over 170 nm. Solid lines denote the four-wave-mixing spectra for a signal located at 1,600 (red), 1,610 (yellow) and 1,620 nm (blue). Inset shows the calculated (purple line) and measured (black diamonds) conversion efficiency as a function of wavelength.

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