Squeeze-type asymmetrical double-core optical fiber switch

A double-core optical fiber, asymmetric technology, applied in cladding optical fiber, nonlinear optics, optics, etc., can solve serious problems, such as large insertion loss of optical switches, half-wave voltage deviation from the original value, etc., to achieve low loss and stability Good performance and high integration
CN102207638BInactive Publication Date: 2012-10-31HARBIN ENG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HARBIN ENG UNIV
Publication Date
2012-10-31
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a squeeze-type asymmetrical double-core optical fiber switch, which comprises an asymmetrical double-core optical fiber, a stackable piezoelectric ceramic squeezing device and an adjustable voltage source. Two 3dB couplers are synthesized on the asymmetrical double-core optical fiber in a fused biconical taper manner, and the two couplers form a Mach-Zehnder interferometer;a ballast direction of a piezoelectric ceramic stack is perpendicular to the axial direction of the optical fiber, a fixed angle is formed between the piezoelectric ceramic stack and the position of double cores, and the piezoelectric ceramic stack is located between the two couplers. The squeeze-type asymmetrical double-core optical fiber switch is simple in structure and easy to manufacture; light paths are ensured to be relatively steady, and influence caused by environment factors, such as vibration, temperature and the like, can be effectively avoided; insertion loss is low, performance of whole optical fiber electro-optic modulation is improved, and modulation on an optical switch in a signal optical fiber can be implemented; and a modulation length necessary for the optical fiber is very short, and the shortest length can be only a few millimeters.
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Description

technical field

[0001] The invention relates to an interference type integrated optical signal switch, which belongs to the field of optical fiber active devices. Background technique

[0002] As the basis of current communication, optoelectronic devices have become an essential part. The development of optoelectronic devices has become an important reason restricting the development of communication. The concept of "integrated optics" proposed in the late 1960s has been widely used in the processing and design of optoelectronic devices today. It integrates all the devices of an optical system on the same substrate, and connects the devices to each other through waveguides. , so that a substrate realizes the function realized by an optical system. It has the advantages of high integration, high stability, strong anti-interference, and easy mass production. However, compared with optical fibers, block integration has poor isolation, especially when it is connected with opti...

Claims

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