Physically contactable graphene electro-optic modulator and method for manufacturing the same
a graphene electro-optic modulator, physical contact technology, applied in the direction of optical waveguide light guide, coating, instruments, etc., to achieve the effect of improving the threshold
Active Publication Date: 2019-11-14
KOREA INST OF SCI & TECH
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Benefits of technology
The patent describes a technology where an electro-optic modulator can be used to control the movement of light in optical circuits and systems. This allows several modulators to be used in a single system and also prevents damage to optical elements from high light levels. The technology also allows for optical reconfiguration, meaning the system can be easily changed to meet different needs.
Problems solved by technology
As a result, the electro-optic modulator modulates the light travelling through the optical waveguide when it physically contacts the corresponding portion of the optical waveguide, and does not perform the modulation function when it does not contact the corresponding portion.
Method used
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experimental example 1
[0097]FIG. 8 is a diagram showing an optical system for analyzing characteristics of the electro-optic modulator according to an embodiment of the present disclosure, and FIGS. 9A to 9C are diagrams showing an overall portion and a partial portion of a system, designed according to the system diagram of FIG. 8, according to an embodiment of the present disclosure. The experimental example means an experiment to measure the performance of the electro-optic modulator 1 manufactured by the manufacturing method according to an embodiment of the present disclosure, in terms of the extinction ratio and the operating speed.
[0098]Referring to FIGS. 8 and 9A, the optical system includes an optical signal oscillator, an amplifier, a bias tee, a polarization controller (PC), and an optical waveguide.
[0099]The optical signal oscillator outputs a continuous wave (CW laser). In an embodiment, the optical signal oscillator is a DFB laser oscillator and may be MT9810A, produced by Anritsu, which is...
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Abstract
Embodiments are directed to a method for manufacturing a graphene electro-optic modulator, which is freely attachable to and detachable from an optical waveguide and modulates a light according to an electric signal. The method includes: forming two metal electrodes on an oxide film formed on a substrate, the two metal electrodes being spaced apart from each other; synthesizing a first graphene film at a metal foil; coating the first graphene film with a polymer membrane; removing the metal foil at which the first graphene film is synthesized; and transferring the first graphene film coated with the polymer membrane onto the oxide film, wherein the first graphene film is electrically connected to any one of the two metal electrodes. There is also provided a graphene electro-optic modulator manufactured by the method.
Description
CROSS-REFERENCE TO RELATED APPLICATION[0001]This application claims priority to Korean Patent Application No. 10-2018-0053138, filed on May 9, 2018, and all the benefits accruing therefrom under 35 U.S.C. § 119, the contents of which in its entirety are herein incorporated by reference.BACKGROUND1. Field[0002]The present disclosure relates to a graphene electro-optic modulator capable of being mounted or detached as desired by means of a physical contact, and more particularly, to a graphene electro-optic modulator applicable to a reconfigurable optical system by modulating an input light signal when physically contacting an optical waveguide and not modulating an input light signal when not physically contacting the optical waveguide, and a method for manufacturing the graphene electro-optic modulator.[0003][Description about National Research and Development Support][0004]This study was supported by National Research Foundation of Korea (Project Name. Study of ultra-high speed pho...
Claims
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IPC IPC(8): G02F1/01
CPCG02F1/0118C09D133/12G02B6/12G02F1/0305
InventorSONG, YONG-WONLEE, SUNGJAE
OwnerKOREA INST OF SCI & TECH