Mixed light combining-wavelength dividing demultiplexer based on array waveguide grating

A technology of arrayed waveguide grating and demultiplexer, which is applied in the direction of optical waveguide light guide, instrument, optics, etc., can solve the problems of high cost, complex structure, large module size, etc., and achieve the effect of reducing the cost of network construction

Active Publication Date: 2016-10-12
HUAZHONG UNIV OF SCI & TECH
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  • Abstract
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Problems solved by technology

The use of hybrid TWDM-PON requires that the optical modules used separately need to contain independent optical wave division m

Method used

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  • Mixed light combining-wavelength dividing demultiplexer based on array waveguide grating
  • Mixed light combining-wavelength dividing demultiplexer based on array waveguide grating
  • Mixed light combining-wavelength dividing demultiplexer based on array waveguide grating

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Embodiment 1

[0042] The hybrid optical beam combining-WDM multiplexer provided in Embodiment 1 is functionally divided into downlink communication wave demultiplexing and uplink optical power beam combining, the downlink work is the same as the ordinary AWG function, and realizes dense wave demultiplexing and uplink work Realize the beam combining function for specific optical wavelengths, one device integrates two functions of wavelength splitting and beam combining

[0043] Light is always guided in the vertical direction by the slab waveguide structure composed of cladding 8, waveguide layer 7 and air;

[0044] When working in the downlink, the input waveguide 1 receives incident light beams of 32 wavelengths, Fraunhofer diffraction occurs through the free transmission area 3, and the diffraction far-field distribution of the incident field is obtained on the left input end face of the array waveguide 4, and then coupled into In the arrayed waveguide 4; because the end face of the array...

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Abstract

The invention discloses a mixed light combining-wavelength dividing demultiplexer based on array waveguide grating. The mixed light combining-wavelength dividing demultiplexer comprises a substrate and a wrapping layer and a wave guide layer arranged on the substrate sequentially from bottom to top, wherein the wave guide layer is a graph layer, where input waveguide, an input free transmission area, array waveguide, an output free transmission area and an output waveguide array are etched rightward with same thickness along a horizontal plane. The mixed light combining-wavelength dividing demultiplexer integrates wavelength dividing and light combining functions. During downlink communication, the mixed light combining-wavelength dividing demultiplexer can realize wavelength dividing de-multiplexing function, and during uplink communication, the mixed light combining-wavelength dividing demultiplexer can realize light combining function. The construction cost of a passive optical network (PON) can be lowered at certain level.

Description

technical field [0001] The invention belongs to the field of integrated photonic devices, and more specifically relates to a hybrid optical beam combiner-wave demultiplexer based on an arrayed waveguide grating. Background technique [0002] With the rapid development of Internet technology, people's demand for network bandwidth continues to increase. In order to meet the ever-increasing bandwidth demands of users, the optical fiber access technology Passive Optical Network (Passive Optical Network, PON) is widely used. [0003] Most of the existing PONs, such as EPON (Ethernet Passive Optical Network) and GPON (Gigabit Passive Optical Network), are based on time-division multiplexing technology. The downlink signal is broadcasted, and the signal is distributed to each optical network unit (Optical Network Unit, ONU) through an optical power splitter. The ONU only receives the specified data sent to itself; in the uplink time division multiplexing method, the optical line ...

Claims

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Application Information

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IPC IPC(8): G02B6/12
CPCG02B6/12009
Inventor 李洵李春生邱新友
Owner HUAZHONG UNIV OF SCI & TECH
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