Equipment and method for transmitting mixed code type optical signal

A technology for transmitting equipment and optical signals, applied in electromagnetic wave transmission systems, electrical components, transmission systems, etc., can solve the problems affecting market application prospects, complex structure of transmitting devices, high cost, improve bandwidth utilization, simple equipment structure, high cost, etc. The effect of reducing cost and complexity

Inactive Publication Date: 2009-01-21
SHANGHAI JIAO TONG UNIV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, since the transmission of this mixed modulation pattern generally requires two modulators, the transmitting device of this mixed modulation pattern is not only complex in structure, but also has a high cost, which affects its market application prospects to a certain extent.

Method used

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  • Equipment and method for transmitting mixed code type optical signal
  • Equipment and method for transmitting mixed code type optical signal
  • Equipment and method for transmitting mixed code type optical signal

Examples

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Embodiment Construction

[0029] Such as figure 1 Shown is a schematic structural diagram of the first embodiment of the hybrid code type optical signal transmitting device of the present invention. This embodiment includes a laser 1 , a signal generating device 2 and a dual-drive MZ modulation device 3 . Wherein, the optical signal output end of the laser 1 is connected with the optical signal input end of the dual-drive MZ modulation device 3 to generate an optical carrier for modulation by the dual-drive MZ modulation device 3 . The signal generating device 2 is used to generate a mixed electrical signal, which is input to the dual-drive MZ modulation device 3, and performs amplitude modulation and multi-ary phase modulation on the above-mentioned optical carrier. The dual-drive MZ modulation device 3 is used to generate a mixed code type optical signal combining amplitude modulation and multi-ary phase modulation.

[0030] In this embodiment, a dual-drive MZ modulation device is used to perform am...

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Abstract

The present invention relates to a mixed code type optical signal transmitting device, and comprises a laser, a signal generation device and a dual-drive Mach- Tsende modulation device. The laser is used for generating optical carriers which are transmitted into the dual-drive Mach- Tsende modulation device; the signal generation device is used for generating mixed electric signals of amplitude modulation and multi-ary phase modulation, which are transmitted into the dual-drive Mach- Tsende dual-drive Mach-Tsang Tak modulation device; the dual-drive Mach- Tsende dual-drive Mach-Tsang Tak modulation device is used for generating the mixed code type optical signals which combine the amplitude modulation and the multi-ary phase modulation, which are generated by the modulation of the electric signals. The present invention also relates to a mixed code type optical signal transmission method. The transmission method can not only transmit outwards the mixed modulation code type which combines the return-to-zero code of carrier suppression and the multi-ary phase shift keying code, but also can modulate the amplitude information of the mixed modulation code type, so as to generate the mixed code type optical signals which combine the amplitude modulation and the multi-ary phase modulation.

Description

technical field [0001] The present invention relates to a hybrid code type optical signal transmitting device and method, in particular to an optical carrier suppression return to zero-multiary phase shift keying code optical signal transmitting device and method, belonging to the technical field of optical fiber communication. Background technique [0002] With the continuous upgrade of optical fiber communication transmission network and system, some existing transmission technologies will face huge challenges. Such as traditional non-return-to-zero (hereinafter referred to as: NRZ) and return-to-zero (hereinafter referred to as: RZ) Amplitude Shift Keying (hereinafter referred to as: ASK) The modulation pattern is no longer suitable for ultra-high-speed, long-distance, and large-capacity optical fiber communication transmission systems. It is necessary to find a new modulation technology to modulate a new pattern to meet the needs of the system, that is, it is required th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/14H04B10/08H04B10/556
Inventor 徐新余苏翼凯陶智慧
Owner SHANGHAI JIAO TONG UNIV
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