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Method and device for generating millimeter wave by directly regulating laser

A technology of optical millimeter wave and generation method, which is applied in optics, instruments, optical fiber transmission, etc., can solve the problems of increasing the cost of the central station, and achieve the effect of reducing cost, high reliability and cheap characteristics, and saving photonic devices

Inactive Publication Date: 2007-07-18
余建军 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This will inevitably increase the cost of the central station, so how to generate optical millimeter waves in the simplest and cheapest way is a key technology that must be solved in the current ROF system

Method used

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  • Method and device for generating millimeter wave by directly regulating laser
  • Method and device for generating millimeter wave by directly regulating laser

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Embodiment Construction

[0044] In the following, the present invention will be described in detail with reference to specific experimental examples and drawings.

[0045] As shown in Figure 1, the components of the optical millimeter wave generator are described as follows:

[0046] Baseband signal generator 1, used to generate electrical baseband signals; direct modulation laser 2, used to generate single longitudinal mode optical signals of specified wavelengths and modulate the baseband signals to optical carriers, which can be DFB-LD; sine wave generator 3 , Used to generate a radio frequency signal, in this embodiment, the radio frequency signal is 10GHZ, it can also be a higher frequency, a two-electrode modulator, 4, used to generate a carrier suppression modulation signal, can be a two-electrode lithium niobate (D- The LN-MOD) modulator can also be a dual electro-absorption intensity modulator; the driving signal of the dual-electrode modulator 6 of this embodiment is a radio frequency signal wit...

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Abstract

A method for generating light millimeter wave by utilizing direct-modulation laser includes driving laser directly by base band electric signal, using radio frequency signal to drive double-electrode modulator to make modulator be under carrier suppression modulation mode to generate light millimeter wave with repeating frequency being two times of radio frequency signal. The device used for realizing said method is also disclosed.

Description

(1) Technical field [0001] The invention belongs to the technical field of an optical fiber-wireless communication (Radio-over-Fiber, abbreviated as ROF) communication system. (2) Background technology [0002] The fourth-generation wireless access system will be extended to the millimeter wave band. In order to overcome the limitation of wireless communication such as transmission distance and meet the broadband requirements in wireless communication, it is necessary to establish contact with the existing broadband wired communication network. Optical fiber-wireless system (Radio-Over-Fiber, referred to as ROF) will become the most promising technology for solving broadband wireless access. The ROF system makes full use of the huge bandwidth of optical fiber to reduce costs and combines the flexibility of wireless communication technology to integrate wireless and optical networks into a new type of access that can increase the capacity and mobility of the access network and red...

Claims

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Application Information

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IPC IPC(8): G02F1/00H04B10/10H04B10/2575
Inventor 余建军陈林
Owner 余建军