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Multiple wavelength serial-type parallel photoelectric modulator and modulating method

An electro-optic modulation and electro-optic modulator technology, applied in optics, nonlinear optics, instruments, etc., can solve problems such as serial modulation that cannot be cascaded, and achieve the effects of low cost, easy manufacture, and low mutual interference

Inactive Publication Date: 2005-08-03
SHANGHAI JIAO TONG UNIV
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  • Abstract
  • Description
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Problems solved by technology

Therefore, this modulator can only modulate in parallel, and cannot be cascaded for serial modulation

Method used

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  • Multiple wavelength serial-type parallel photoelectric modulator and modulating method
  • Multiple wavelength serial-type parallel photoelectric modulator and modulating method
  • Multiple wavelength serial-type parallel photoelectric modulator and modulating method

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Experimental program
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Embodiment 1

[0026] The equipment parameters in the device are: the wavelength of the laser 8 is 832nm, the wavelength of the laser 9 is 980nm, the refractive index of the prism 15 is 1.78, the metal upper electrode 16 is a silver film, the thickness is 60 nanometers, and the dielectric constant is ε=-20+ i, the organic polymer waveguide layer 17 is made of cross-linked organic polymer, the thickness is 2 microns, the refractive index is 1.65, and the electro-optic coefficient γ after polarization 33 The isolation layer 18 is guerrilla polymer glass with a thickness of 2 microns and a refractive index of 1.48. The substrate layer 19 is a gold film with a thickness of 100 nanometers.

[0027] Adjust the polarizer 11 so that the polarization direction is horizontal, corresponding to TM mode, turn on the laser 8, adjust the modulator 4, make the light intensity close to the minimum value (but not the minimum value), turn on the laser 9, turn off the laser 8, and adjust the angle of the modulat...

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Abstract

The parallel electrooptical modulator has two reflecting electrooptical modulators connected serially and connected to two electric signal sources separately. The laser beams two lasers generate in different wavelengths are combined into one beam with the light beam splitter, formed into TM light in the polarizer, and modulated separately with two reflecting electrooptical modulators; and the modulated output light beams are separated into light beams of different wavelengths with the grating spectrometer and received with two detectors. The reflecting electrooptical modulator includes prism with four layers of deposited film, upper metal electrode, wave conducting organic polymer layer, isolating layer and lower metal electrode, and the film layers has such thickness that the attenuation total reflection curve of the modulator has width matching the spectral width of the incident laser pulse. The present invention can perform selective modulation of light wave with different wavelength components.

Description

technical field [0001] The present invention relates to a multi-wavelength series parallel electro-optic modulation device and modulation method, through the series connection of two reflective electro-optic modulators, the attenuated total reflection of the reflective electro-optic modulator is used for the different properties of different wavelength light absorption peak positions The invention relates to parallel modulation of lights of different wavelengths, belonging to the technical field of wavelength division multiplexing in optoelectronic communication. Background technique [0002] In the field of optoelectronic communication, external signals need to be loaded on the transmission to realize optical transmission of signals. With the increase of people's demand for information, wavelength division multiplexing technology is being used more and more. Wavelength division multiplexing technology refers to the state that multi-wavelength information carried by light of...

Claims

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Application Information

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IPC IPC(8): G02F1/01G02F1/35
Inventor 周见红邓晓旭曹庄琪沈启舜
Owner SHANGHAI JIAO TONG UNIV
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