Waveguide-integrated graphene spatial mode filters for on-chip mode-division multiplexing

Xing, Zhenkun; Li, Chuan; Han, Yingdong; Hu, Haofeng; Cheng, Zhenzhou; Wang, Jiaqi; Liu, Tiegen

doi:10.1364/oe.27.019188

Cited by 19 publications

(20 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Graphene's photonic properties give several complementarities over silicon photonics, which makes waveguide-integrated graphene photonic devices promising for communication applications. For example, as the graphene-on-waveguide absorption coefficient is determined by the superimposed area between graphene and the waveguide mode, by integrating graphene on a multimode waveguide, Xing et al [36] developed mode-division multiplexers based on TE 1 -mode-pass and TE 2mode-pass filters, as shown in Figure 2A. Moreover, the graphene-on-waveguide absorption is polarization-dependent [38].…”

Section: Waveguide-integrated Graphene Photonic Devices For Communicamentioning

confidence: 99%

See 1 more Smart Citation

Recent Progress in Waveguide-Integrated Graphene Photonic Devices for Sensing and Communication Applications

et al. 2020

Self Cite

View full text Add to dashboard Cite

Graphene is a two-dimensional material with numerous intriguing optical properties, such that graphene photonic devices have attracted great interest for sensing and communication applications. However, surface-illuminated graphene photonic devices usually suffer from weak light-matter interactions due to the atomic-layer thickness of graphene, seriously limiting the performances of such devices. To tackle this problem, waveguide-integrated graphene photonic devices have been demonstrated since 2010, which offer the advantage of much longer interaction length between the evanescent field of the optical waveguide and graphene than the surface-illuminated devices. Moreover, the fabrication of waveguide-integrated graphene photonic devices is compatible with CMOS technology, allowing potentially low-cost and high-density on-chip integration. To date, a tremendous interest is growing in the hybrid integration platform composed of graphene and silicon photonic integrated circuits. In this paper, we review the recent progress in waveguide-integrated graphene photonic devices and their applications in sensing and communication.

show abstract

Section: Waveguide-integrated Graphene Photonic Devices For Communicamentioning

confidence: 99%

“…(C) Schematic of the dual-layer graphene-on-Ge slot waveguide modulator. A is reprinted with permission from Ref [36]…”

mentioning

confidence: 99%

Recent Progress in Waveguide-Integrated Graphene Photonic Devices for Sensing and Communication Applications

et al. 2020

Self Cite

View full text Add to dashboard Cite

show abstract

“…Though the universal scheme based on mode conversion facilitated by ADC [8] can achieve operation for modes with arbitrary order, a large device length is still required for the purpose of adiabatic coupling between the fundamental mode and HOM. The absorption-based ones are usually suffering from low compactness [17], [18], large EL [20] and unsatisfactory modal extinction ratio (ER) [18], owing to weak Qian Li and Yanli Zhao are with Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, China (e-mail: liqian930218@hust.edu.cn; yanlizhao@hust.edu.cn). Xin Hao is with Key Laboratory of Laser Device Technology, China North Industries Group Corporation Limited, Chengdu, 610041, China (e-mail: emil-007@163.com).…”

Section: Introductionmentioning

confidence: 99%

Universal Design of Ultra-Broadband and Ultra-Compact High Order Mode Pass Filters Based on Enhanced Absorption in Ultrathin Metal Layers

Zhao

Xin

2022

IEEE Photonics J.

View full text Add to dashboard Cite

In hybrid plasmonic Si waveguides integrated with ultrathin Au stripes, mode hybridization effects between quasi-TE modes of different orders and various bound modes are first presented. Enabled by nearly complete mode-selective absorption attributed to the enlarged mode propagation attenuation (MPA) coefficient for lower-order quasi-TE modes under circumstances of mode hybridizations, multi-segment tapered structures are theoretically proposed to constitute high order mode (HOM) pass filters. It is believed that these innovative observations would have potential applications in the ultra-compact on-chip mode division multiplexing (MDM) systems, and provide inspirations for the development of multimode photonics.

show abstract

“…By using state-of-art nanofabrication technology, graphene phase modulators with microring resonators and Mach-Zehnder interferometers (MZIs) structures have been experimentally demonstrated [19], [20]. Recently, waveguide-integrated graphene devices have been proposed for the applications of MDM, such as waveguide-integrated spatial mode filters [28] and multi-mode modulators [29], [30]. In such devices, layers of graphene narrow strips (GNSs) of different patterns separated by a thin insulator layer were integrated on the surface of the multimode waveguide.…”

Section: Introductionmentioning

confidence: 99%

Design of a Graphene-Based Waveguide-Integrated Multimode Phase Modulator

et al. 2021

Self Cite

View full text Add to dashboard Cite

The on-chip mode-division multiplexing (MDM) is an attractive technique to achieve high-capacity optical transmissions by using a single-wavelength carrier. In traditional schemes, multiple channels with a fundamental mode are modulated by parallel arranged electro-optic modulators and then converted to high-order modes. However, the method is usually limited by large device footprints and high energy consumption. In this work, we study a graphene-based waveguide-integrated multimode phase modulator to individually modulate TE0 and TE1 modes in a multimode waveguide device. To be specific, we designed a single layer of graphene narrow strips (GNSs) integrated on the surface of the multimode waveguide device to selectively introduce contrasting phase shifts to different modes. Based on the optimized waveguide structures, a Mach-Zehnder interferometer modulator with different GNS patterns on each arm is designed. Our study is promising to be used in the future high-density on-chip MDM systems for optical interconnects and optical networks.

show abstract

Waveguide-integrated graphene spatial mode filters for on-chip mode-division multiplexing

Cited by 19 publications

References 26 publications

Recent Progress in Waveguide-Integrated Graphene Photonic Devices for Sensing and Communication Applications

Recent Progress in Waveguide-Integrated Graphene Photonic Devices for Sensing and Communication Applications

Universal Design of Ultra-Broadband and Ultra-Compact High Order Mode Pass Filters Based on Enhanced Absorption in Ultrathin Metal Layers

Design of a Graphene-Based Waveguide-Integrated Multimode Phase Modulator

Contact Info

Product

Resources

About