A hybrid integrated double-balanced modulation dfb laser and double-balanced modulation system
A DFB laser, hybrid integration technology, applied in the field of optoelectronics, can solve the problems of signal instability, nonlinear distortion, small dynamic range, etc., to achieve the effect of stability advantages
Active Publication Date: 2019-05-03
南京诺之杰电子科技有限公司
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[0004] The main technical problem to be solved by the present invention is to provide a hybrid integrated double-balanced modulation DFB laser and a double-balanced modulation system to solve the problems of nonlinear distortion, signal instability, and small dynamic range of lasers in the prior art of optical wireless communication
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[0024] In order to facilitate the understanding of the present invention, the present invention will be described in more detail below in conjunction with the accompanying drawings and specific embodiments. Preferred embodiments of the invention are shown in the accompanying drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described in this specification. Rather, these embodiments are provided for the purpose of making the disclosure of the present invention more thorough and comprehensive.
[0025] It should be noted that, unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by those skilled in the technical field of the present invention. Terms used in the description of the present invention are only for the purpose of describing specific embodiments, and are not used to limit the present invention. The term "and / or" used...
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The invention discloses a hybrid integrated double-balanced modulation DFB laser, which comprises a first laser chip, a second laser chip and a planar optical waveguide coupler packaged in the same tube shell, wherein an output port of the first laser chip and the output port of the second laser chip are combined to the planar optical waveguide coupler; and the output port of the planar optical waveguide coupler is connected to a coupling fiber. The invention further discloses a double-balanced modulation system, which comprises the hybrid integrated double-balanced modulation DFB laser, a radio frequency beam splitter, a first T-type deflector and a second T-type deflector, wherein the radio frequency beam splitter, the first T-type deflector and the second T-type deflector are connectedwith one another. A radio frequency signal can be stably modulated to laser light generated by the first laser chip and the second laser chip through the hybrid integrated double-balanced modulation DFB laser and the double-balanced modulation system, the wavelengths of the laser light can be accurately controlled, and the output modulated signal has obvious advantages in the aspects, such as thedynamic power range, the environmental adaptability, the signal distortion and the stability.
Description
technical field [0001] The invention relates to the field of optoelectronics, in particular to a hybrid integrated double-balanced modulation DFB laser and a double-balanced modulation system. Background technique [0002] As a communication technology attached to optical fiber, Radio-Over-Fiber (ROF) has the characteristics of low loss, large bandwidth and ubiquitous access, and is a key technology to solve the bottleneck of communication development. [0003] Under the current technical conditions, the development of ROF communication technology has been greatly restricted due to the high cost and serious nonlinear distortion of the analog modulated laser used as the light source module in the ROF communication system. Contents of the invention [0004] The main technical problem to be solved by the present invention is to provide a hybrid integrated double-balanced modulation DFB laser and a double-balanced modulation system to solve the problems of nonlinear distortion...
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IPC IPC(8): H01S5/40H01S5/12
Inventor 张云山赵国旺施跃春邹琳杰周煜柯陈向飞
Owner 南京诺之杰电子科技有限公司