• 专利标题:   Double-core optical fiber electro-optic modulator based on double-layer graphene for optical fiber communication, has electrode arranged on transition layer, where Fermi level of second graphene layer is adjusted by applying external voltage together with first graphene layer through electrode.
  • 专利号:   CN113885230-A
  • 发明人:   YUAN L, ZHANG Y, WANG H, CHEN M
  • 专利权人:   UNIV GUILIN ELECTRONIC TECHNOLOGY
  • 国际专利分类:   C03B037/027, G02B006/255, G02F001/03, G02F001/035
  • 专利详细信息:   CN113885230-A 04 Jan 2022 G02F-001/035 202219 Chinese
  • 申请详细信息:   CN113885230-A CN11187343 12 Oct 2021
  • 优先权号:   CN11187343

▎ 摘  要

NOVELTY - The double-core optical fiber electro-optic modulator based on double-layer graphene comprises a first graphene layer (3-1) grown in the D-shaped side polishing area by using a chemical vapor deposition method. The first layer of graphene is covered with aluminum oxide layer having larger refractive index. An electrode (6) is arranged on the aluminum oxide transition layer (4). The second graphene layer (3-2) is mechanically transferred on the transition layer, and the Fermi level of the second layer of graphene is adjusted by applying an external voltage together with the first layer of graphene through the electrode. The second graphene layer is covered with an organic material polyvinyl butyral (PVB) layer (5). The interferometer is formed with a Mach-Zehnder structure at the front end and the rear end of the side polishing area by a fused tapering method. USE - Double-core optical fiber electro-optical modulator for optical fiber communication. ADVANTAGE - The double-core optical fiber electro-optical modulator based on double-layer graphene has simple and compact structure, high modulation rate, low insertion loss, and low modulation voltage. DESCRIPTION OF DRAWING(S) - The drawing shows a structure schematic diagram of D-type side double-core optical fiber electro-optical modulator based on double-layer graphene. Optical fiber core (2-1) Optical fiber core (2-2) First graphene layer (3-1) Second graphene layer (3-2) Aluminum oxide transition layer (4) Organic material PVB layer (5) Electrode (6)