Method, system and device for transmitting wavelength division multiplexing passive optical network
A passive optical network and wavelength division multiplexing technology, applied in the field of optical communication, can solve the problems of different ONUs, complex system structure, high operation and maintenance costs, and achieve the effect of solving polarization problems, reducing costs and ensuring transmission performance.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0033] First, an embodiment of the present invention provides a polarization-independent reflective modulator.
[0034] In the embodiment of the present invention, such as image 3 As shown, the polarization-independent reflective modulator 300 specifically includes: a semiconductor optical amplifier (SOA, Semiconductor Optical Amplifier) 301, a rotating mirror 302 and a mirror 303, wherein the semiconductor optical amplifier SOA 301 has a data modulation interface, that is, in addition to the amplification function In addition, it also has a modulation function. Wherein, the rotating mirror 302 can be a 45-degree rotating mirror, which can be used to rotate the polarization direction of the polarized light by a preset angle, such as 45 degrees. The mirror 303 may be a high reflection mirror (HRM, high reflection mirror).
[0035] The working principle of the reflection modulator can be found in Figure 4 . When the injected light passes through the polarization-dependen...
Embodiment 2
[0038] Embodiments of the present invention provide another polarization-independent reflective modulator. Such as Figure 5 Shown is a schematic structural diagram of the reflective modulator.
[0039] The reflective modulator 500 specifically includes: an SOA 501 and a Faraday Rotating Mirror (FRM, Faraday Reflection Mirror) 502 arranged along the optical path.
[0040] Among them, the Faraday rotating mirror 502 integrates the functions of the 45-degree rotating mirror 302 and the reflecting mirror 303, that is, the Faraday rotating mirror 502 can rotate the P light and S light of the output light of the SOA 501 after the first amplification by 90 degrees, Therefore, after the second amplification by the SOA 501 , the sum of the gain of the P light and the S light of the injection light injected into the SOA 501 is equal, and reflection modulation independent of the polarization of the injection light is realized.
Embodiment 3
[0042] An embodiment of the present invention provides an optical network unit, the optical network unit may include: at least one optical network unit transceiver module, the optical network unit transceiver module is used to receive downlink optical signals, and divide the downlink optical signals into There are two beams, one beam is used to obtain the downlink data loaded in the downlink optical signal after being demodulated, and the other beam is used as an uplink optical signal after polarization-independent amplification and modulation, and is used to carry the downlink data corresponding to the downlink data. upstream data.
[0043] In order to facilitate a further understanding of the present invention, the present invention will be described in detail below in conjunction with specific embodiments of the present invention. Such as Figure 6 As shown, the optical network unit transceiver module may include:
[0044] An optical splitter 601, configured to receive a ...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com