Few-mode parameter and strong-coupling Raman combined amplification method and device

Abstract

The invention discloses a few-mode parameter and strong-coupling Raman combined amplification method. The method comprises the following steps of performing signal modulation on signal light to obtainsignal light with four polarization modes; enabling the signal light of the four polarization modes to enter a few-mode optical fiber through a photon lantern mode division multiplexing technology; carrying out signal modulation on the pump light to obtain pump light with four polarization modes, and coupling the four kinds of light into a long tapering optical fiber; the coupled and outputted pump light being coupled with signal light outputted by the few-mode optical fiber through phase matching, entering a coupler and then being inputted into an amplifier; and outputting the obtained amplified light in a balanced manner through a photon lantern. The invention further discloses a few-mode parameter and strong-coupling Raman combined amplification device. According to the method, high-gain and large-bandwidth amplification of signal light is realized; the amplified light beam is higher in signal-to-noise ratio and better in light beam quality, performance of the optical fiber communication system is effectively improved, and a transmission distance of the optical fiber communication system is increased.

Description

technical field

[0001] The invention relates to optical amplification technology in the communication field, in particular to a joint amplification method and device of few-mode parameters and strong coupling Raman. Background technique

[0002] With the rapid development of cloud computing, big data, Internet TV and other services, and the advent of the 5G era, the demand for transmission capacity, transmission rate, and transmission distance of optical fiber communication systems is getting higher and higher. In order to meet the needs of optical fiber communication systems, multiplexing technologies such as optical time division multiplexing, wavelength division multiplexing, polarization multiplexing, space division multiplexing, and dense wavelength division multiplexing have been continuously proposed and applied to the expansion of optical communication systems. However, for the long-distance optical fiber communication system of these technologies, the refraction and...

Examples

Embodiment Construction

[0020] A joint amplification method of few-mode parameters and strong-coupled Raman described in this embodiment comprises the following steps:

[0021] S1: The signal light is signal-modulated to obtain four polarization modes of signal light, which are LP 01 2. LP 11 3. LP 21 4. LP 02 5.

[0022] S2: Enter the signal light of four polarization modes into the few-mode fiber 10 through the photonic lantern mode division multiplexing technology.

[0023] S3: Signal modulation is performed on the pump light to obtain pump light in four polarization modes, which are LP 01 2. LP 11 3. LP 21 4. LP 02 5. These four kinds of light are coupled into the long tapered optical fiber 6 .

[0024] S4: The pump light coupled out in S3 is phase-matched, coupled with the signal light output by S2 few-mode fiber 10 into the coupler to achieve fiber parametric amplification, the signal light is amplified with a large bandwidth and high gain, and then the output light input to the ampli...

technical field

[0001] The invention relates to optical amplification technology in the communication field, in particular to a joint amplification method and device of few-mode parameters and strong coupling Raman. Background technique

[0002] With the rapid development of cloud computing, big data, Internet TV and other services, and the advent of the 5G era, the demand for transmission capacity, transmission rate, and transmission distance of optical fiber communication systems is getting higher and higher. In order to meet the needs of optical fiber communication systems, multiplexing technologies such as optical time division multiplexing, wavelength division multiplexing, polarization multiplexing, space division multiplexing, and dense wavelength division multiplexing have been continuously proposed and applied to the expansion of optical communication systems. However, for the long-distance optical fiber communication system of these technologies, the refraction and...

Examples

Embodiment Construction

[0020] A joint amplification method of few-mode parameters and strong-coupled Raman described in this embodiment comprises the following steps:

[0021] S1: The signal light is signal-modulated to obtain four polarization modes of signal light, which are LP 01 2. LP 11 3. LP 21 4. LP 02 5.

[0022] S2: Enter the signal light of four polarization modes into the few-mode fiber 10 through the photonic lantern mode division multiplexing technology.

[0023] S3: Signal modulation is performed on the pump light to obtain pump light in four polarization modes, which are LP 01 2. LP 11 3. LP 21 4. LP 02 5. These four kinds of light are coupled into the long tapered optical fiber 6 .

[0024] S4: The pump light coupled out in S3 is phase-matched, coupled with the signal light output by S2 few-mode fiber 10 into the coupler to achieve fiber parametric amplification, the signal light is amplified with a large bandwidth and high gain, and then the output light input to the ampli...

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