High-speed silicon-based integrated optical modulators for optical-fiber telecommunications

2014 ◽  
Author(s):  
Kensuke Ogawa
Keyword(s):  
Optical Fiber ◽  
High Speed ◽  
Optical Modulators ◽  
Integrated Optical ◽  
Silicon Based

scholarly journals Analyzing the BER and optical fiber length performances in OFDM RoF links

2021 ◽  
Vol 23 (3) ◽  
pp. 1501
Author(s):  
Marwa M. Kareem ◽  
Sameer A. S. Lafta ◽  
Hadi Fakhir Hashim ◽  
Raed Khalid Al-Azzawi ◽  
Adnan Hussein Ali
Keyword(s):  
Optical Fiber ◽  
Orthogonal Frequency Division Multiplexing ◽  
Fiber Length ◽  
High Speed ◽  
Optical Network ◽  
Optical Modulators ◽  
Optical Amplification ◽  
Received Power ◽  
Rate Transmission ◽  
Radio Signals

Radio over fiber (RoF) can be assessed as a system of most convenient combination of optical fiber and radio signals. The technique of orthogonal frequency division multiplexing (OFDM) considers as a data distribution over a huge number of carriers having spaced from each other with specific frequencies at overlap bands. Hence incorporates OFDM with the optical fiber, OFDM-RoF system can be increased the modulation RF access capacity besides high-speed data transmission, it considers a broadband communication trend of the current and future applications specifically for 5G mobile. The optical network scenarios of various RF can be model with optisystem software, and OFDM in addition to use a section of the orthogonal multiplex frequency of 16-quadrature amplitude modulation (QAM) RF modulating signal. In the optical domain, Mach-Zehnder modulator (MZM) optical modulators are used to carry out different results with different fiber lengths. An OFDM-RoF wireless communication system considers as advanced data rate transmission achievement by minimum delays. The essential goal of this paper is for identifying the minimum bit error rate (BER) for the 16-QAM modulation with varying fiber length. The OFDM-RoF system can be able for realizing a fiber length 100 km with a restricted decreasing in the received power so that the constellation noise is became greater despite of applying electrical amplification and optical amplification.

Recent Progress in High-Speed Silicon-Based Optical Modulators

2009 ◽  
Vol 97 (7) ◽  
pp. 1199-1215 ◽  
Author(s):  
Delphine Marris-Morini ◽  
Laurent Vivien ◽  
Gilles Rasigade ◽  
Jean-Marc Fedeli ◽  
Eric Cassan ◽  
...  
Keyword(s):  
High Speed ◽  
Recent Progress ◽  
Optical Modulators ◽  
Silicon Based

scholarly journals Phosphorene-assisted silicon photonic modulator with fast response time

Nanophotonics ◽  
2020 ◽  
Vol 9 (7) ◽  
pp. 1973-1979 ◽  
Author(s):  
Zhao Cheng ◽  
Rui Cao ◽  
Jia Guo ◽  
Yuhan Yao ◽  
Kangkang Wei ◽  
...  
Keyword(s):  
Response Time ◽  
High Speed ◽  
Fast Response ◽  
Optical Modulator ◽  
High Electron ◽  
Optical Modulators ◽  
Strong Light ◽  
Optical Signals ◽  
All Optical ◽  
Silicon Based

AbstractAll-optical modulators avoid the conversion from external electronic signals to optical signals and thus have the potential to achieve an energy-efficient high-speed photonic system. Phosphorene recently debuted as an attractive material that exhibits outstanding high electron mobility, strong light-matter interaction and modifiable bandgap, making it ideal for all-optical modulators. In this paper, by incorporating a phosphorene and silicon-based micro-ring resonator (MRR), we first propose and experimentally demonstrate a unique phosphorene-integrated all-optical modulator in telecommunications. By utilizing a phosphorene thin film with an average thickness of 22 nm as the absorption material, the rise time of only 479 ns and decay time of 113 ns are achieved, which is the fastest reported response time in the family of phosphorene modulators. The corresponding 3 dB bandwidth is larger than 2.5 MHz, and it exhibits a low-loss performance benefited from its finite bandgap. The proposed phosphorene/MRR hybrid modulator may have potential in the applications of all-optical interconnections.

scholarly journals High Speed Silicon based optical modulators

2012 ◽  
Author(s):  
G. T. Reed ◽  
F. Y. Gardes ◽  
D. J. Thomson ◽  
Y. Hu ◽  
S. Liu ◽  
...  
Keyword(s):  
High Speed ◽  
Optical Modulators ◽  
Silicon Based

scholarly journals Heterogeneously-Integrated Optical Phase Shifters for Next-Generation Modulators and Switches on a Silicon Photonics Platform: A Review

Micromachines ◽  
2021 ◽  
Vol 12 (6) ◽  
pp. 625
Author(s):  
Younghyun Kim ◽  
Jae-Hoon Han ◽  
Daehwan Ahn ◽  
Sanghyeon Kim
Keyword(s):  
Silicon Photonics ◽  
High Speed ◽  
High Performance ◽  
Phase Shifter ◽  
Phase Shifters ◽  
Next Generation ◽  
Optical Modulators ◽  
Optical Phase ◽  
High Modulation ◽  
Integrated Optical

The realization of a silicon optical phase shifter marked a cornerstone for the development of silicon photonics, and it is expected that optical interconnects based on the technology relax the explosive datacom growth in data centers. High-performance silicon optical modulators and switches, integrated into a chip, play a very important role in optical transceivers, encoding electrical signals onto the light at high speed and routing the optical signals, respectively. The development of the devices is continuously required to meet the ever-increasing data traffic at higher performance and lower cost. Therefore, heterogeneous integration is one of the highly promising approaches, expected to enable high modulation efficiency, low loss, low power consumption, small device footprint, etc. Therefore, we review heterogeneously integrated optical modulators and switches for the next-generation silicon photonic platform.

scholarly journals Double-layer graphene on photonic crystal waveguide electro-absorption modulator with 12 GHz bandwidth

Nanophotonics ◽  
2019 ◽  
Vol 9 (8) ◽  
pp. 2377-2385 ◽  
Author(s):  
Zhao Cheng ◽  
Xiaolong Zhu ◽  
Michael Galili ◽  
Lars Hagedorn Frandsen ◽  
Hao Hu ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Double Layer ◽  
Slow Light ◽  
Modulation Depth ◽  
Photonic Crystal Waveguide ◽  
Optical Modulators ◽  
Layer Graphene ◽  
Silicon Photonic ◽  
On Chip ◽  
Silicon Based

AbstractGraphene has been widely used in silicon-based optical modulators for its ultra-broadband light absorption and ultrafast optoelectronic response. By incorporating graphene and slow-light silicon photonic crystal waveguide (PhCW), here we propose and experimentally demonstrate a unique double-layer graphene electro-absorption modulator in telecommunication applications. The modulator exhibits a modulation depth of 0.5 dB/μm with a bandwidth of 13.6 GHz, while graphene coverage length is only 1.2 μm in simulations. We also fabricated the graphene modulator on silicon platform, and the device achieved a modulation bandwidth at 12 GHz. The proposed graphene-PhCW modulator may have potentials in the applications of on-chip interconnections.

High speed optical switching gain based EDFA model with 30 Gb/s NRZ modulation code in optical systems

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Mahmoud M. A. Eid ◽  
Ahmed Nabih Zaki Rashed ◽  
Keyword(s):  
Optical Fiber ◽  
High Speed ◽  
Optical Switching ◽  
Fiber Amplifier ◽  
Optical Systems ◽  
Power Budget ◽  
Erbium Doped Fiber Amplifier ◽  
Amplifier Model ◽  
Modulation Rate ◽  
Modulation Code

AbstractThis study presents high speed optical switching gain based Erbium doped fiber amplifier model. By using the proposed model the optical fiber loss can be minimized. The system is stabilized with the power budget of 25.875 mW a long 75 km as a length of optical fiber in this study can be verified. The modulation rate of 10 Gb/s can be upgrade up to reach 30 Gb/s. The suitable power for the optical transmitter is −2.440 dBm and NRZ modulation code is verified. The receiver sensitivity can be upgraded with the minimum bit error rate and max Q factor are 1.806 e−009 and 5.899.

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