ASK-FSK converter and conversion method
A technology of ASK-FSK and conversion method, which is applied in the field of ASK-FSK converter and conversion, can solve the problems that it is difficult to realize ASK-FSK high-speed conversion, and achieve the effect of high-speed ASK-FSK signal conversion
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Embodiment 1
[0038] Such as figure 2 As shown, the ASK-FSK converter provided by the embodiment of the present invention includes:
[0039] The beam splitter 11 receives the ASK optical signal and splits the ASK optical signal into a first ASK optical signal and a second ASK optical signal;
[0040] An optical generator 12, which generates continuous polarized light having a frequency different from that of the ASK optical signal;
[0041] The first optical coupler 13 is connected to an output end of the beam splitter 11 and the optical generator 12, and couples the first ASK optical signal to the continuous polarized light;
[0042] Polarization modulator 14, connected to the first optical coupler 13, when the polarization direction of the first ASK optical signal and the polarization direction of the continuous polarized light form a predetermined angle, use the cross polarization modulation effect to convert the continuous polarization Optically modulated into an optical signal that ...
Embodiment 2
[0046] image 3 As shown, for the embodiment of the present invention, the high-order nonlinear fiber is selected as the cross-polarization modulation medium, that is, the combination of the high-order nonlinear fiber and the polarizer is used as the ASK-FSK converter of the polarization modulator, including: Beamer Coupler1, laser diode LD2, polarization controller PC1, polarization controller PC2, optical coupler Coupler2, high-order nonlinear fiber HNLF, polarization beam splitter PBS, and optical coupler Coupler3; among them, the output of the polarization beam splitter PBS is to be used as a polarizer. In addition, the ASK-FSK converter provided in this embodiment further includes an optical delay device ODL.
[0047] Such as image 3As shown, in this embodiment, another laser diode LD1 is used to generate a high-speed ASK optical signal of 40Gbit / s. The LD1 has an operating wavelength of 1554.4nm and an input power of 20dBm; then the high-speed ASK optical signal is pa...
Embodiment 3
[0055] Figure 7 As shown, the semiconductor optical amplifier selected as the cross polarization modulation medium provided by the embodiment of the present invention, that is, the ASK-FSK converter using the combination of the semiconductor optical amplifier and the polarizer as the polarization modulator, includes: beam splitter Coupler1, External cavity laser ECL2, polarization controller PC1, polarization controller PC2, optical coupler Coupler2, semiconductor optical amplifier SOA, polarization beam splitter PBS, and optical coupler Coupler3; wherein, the output of the polarization beam splitter PBS is used as an analyzer device. In addition, the ASK-FSK converter provided in this embodiment further includes an optical delay device ODL.
[0056] Such as Figure 7 As shown, in this embodiment, another external cavity laser ECL1 is used to generate a 40Gbit / s high-speed ASK optical signal, and the operating wavelength of the ECL1 is 1557.9nm; then the high-speed ASK opti...
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