Plane single-chip integrated acoustooptic wavelength route optical switch
A single-chip integrated, planar optical waveguide technology, applied in the field of optical communication, can solve the problems of fewer gating channels, difficult mass production, high cost, etc., and achieve the effect of increasing switching speed, reducing process difficulty, and improving yield
Inactive Publication Date: 2005-12-21
XI AN JIAOTONG UNIV
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Problems solved by technology
The electro-optic type adopts the electro-optic effect theory, and the switching speed is fast, but its basic unit is mostly a 1*2 or 2*2 directional coupler (strip waveguide structure), and the multi-channel switch is formed by repeated accumulation and cascading of this structural unit , low yield, high cost, difficult to achieve mass production
The integrated acousto-optic optical switch adopts the principle of acousto-optic effect, but most of them are acousto-optic tunable filters (AOTFs) structures at present, and the number of gating channels is very small, which can only be realized by cascading or using in conjunction with wavelength division multiplexers. Multi-channel wavelength routing function, at the same time, because it is based on the strip optical waveguide, there are problems such as complex structure and process, high cost and difficulty in mass production, so it is only suitable for optical signal add / drop, but not suitable for multi-channel wavelength routing optical switch
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[0016] The present invention will be further described in detail below in conjunction with the accompanying drawings and the embodiments given by the inventor.
[0017] See attached Figure 1~2 , a multi-channel planar monolithic integrated acousto-optic wavelength routing optical switch, including: a planar optical waveguide chip 2, an input optical fiber array 1 with an M port and an output optical fiber array 3 with an N port are arranged at both ends of the planar optical waveguide chip 2 A first optical waveguide lens 5 and a second optical waveguide lens 7 are arranged on the planar optical waveguide 4, an interdigital transducer group composed of several interdigital transducers 6 is arranged between the two optical waveguide lenses, and the first optical waveguide The lens 5, the interdigital transducer 6 and the second optical waveguide lens 7 are sequentially connected through the optical path of the flat optical waveguide 4; the light of different wavelengths incide...
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The invention discloses a planar monolithic integrated acousto-optic wavelength routing optical switch, which comprises a planar optical waveguide chip and an input / output optical fiber array located at both ends of the chip. Two waveguide lenses and a finger transducer group are arranged on the chip. They are connected through an optical path; the computer chip gates the ultrasonic power supply to power up the corresponding interdigital transducers and excites the acoustic grating in the waveguide, so that the λ incident from any of the M incident ports can be made through the acousto-optic interaction. 1 , lambda 1 , lambda 2 ,...λ N The wavelength division multiplexing optical signals of N wavelengths are directed to N different output fiber ports according to the principle of wavelength routing; its characteristics are: a waveguide lens optical path and an acousto-optic Bragg grating deflection mechanism are used, and the entire device is a monolithic integrated waveguide structure , with one or more optional transmission ports, compact structure, high integration, fast switching speed, good process repeatability, and can improve yield and cost performance.
Description
technical field [0001] The invention belongs to the technical field of optical communication and the field of integrated optoelectronics, and relates to a planar monolithic integrated acousto-optic wavelength routing optical switch based on the acousto-optic effect. Background technique [0002] From high-speed optical fiber communication network systems to optical fiber measurement systems, optical switches are key components to realize channel switching and routing selection of light in the network optical path. In today's information explosion, due to the rapid development of wavelength division multiplexing technology, optical switches used for routing, especially wavelength routing selection, have increasingly urgent needs in the intelligentization of ultra-high-speed and ultra-large-capacity optical communication systems. [0003] At present, optical switches can be divided into two categories: non-integrated spatial optical switches and integra...
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IPC IPC(8): G02B6/26G02B26/00G02F1/11H04J14/02
Inventor朱京平唐天同
OwnerXI AN JIAOTONG UNIV