Multi-optical carrier generation using a microring resonator to enhance the number of serviceable channels in radio over free space optic

2017 ◽  
Vol 59 (8) ◽  
pp. 2038-2044 ◽  
Author(s):  
I. S. Amiri ◽  
S. E. Alavi ◽  
S. Punthawanunt ◽  
P. Yupapin ◽  
P. Youplao
Keyword(s):  
Free Space ◽  
Microring Resonator ◽  
Carrier Generation ◽  
Optical Carrier ◽  
Free Space Optic

Terrestrial Free Space Optic Propagation Analysis Considering Malaysia Weather Condition

2012 ◽  
Author(s):  
Wan Rizal Hazman Wan Ruslan ◽  
Sevia Mahdaliza Idrus ◽  
Arnidza Ramli ◽  
Norhafizah Ramli ◽  
Abu Sahmah Mohd Supa’at ◽  
...  
Keyword(s):  
Bit Error Rate ◽  
Error Rate ◽  
Free Space ◽  
Weather Condition ◽  
Q Factor ◽  
Performance Characterization ◽  
Space Optics ◽  
Terrestrial System ◽  
Data Rates ◽  
Free Space Optic

Pemantulan cahaya matahari oleh cermin atau dikenali sebagai heliograf adalah kaedah awal komunikasi optik wayarles (OWC). Sewajarnya, sistem komunikasi moden mendedahkan kadar data yang tinggi di samping kualiti perkhidmatan yang lebih baik berbanding kaedah terdahulu. Sistem komunikasi optic wayarles mempunyai banyak kebaikan dimana ia adalah penting untuk sistem daratan, sebagai contoh penggunaan Optik Ruang Bebas (FSO) di kawasan luar. Di dalam kertas kerja ini, gambaran dan pencirian prestasi sistem Optik Ruang Bebas seperti pelemahan, kadar bit kesalahan (BER), faktor Q dan jenis pengesan yang berguna untuk pengesanan dalam sistem FSO dibentangkan. Sistem telah direkabentuk dan disimulasi untuk perincian prestasi dengan mengambil kira kawasan Subang. Kata kunci: Pelemahan; kadar bit kesalahan; pengesan foto; faktor Q; sistem daratan The reflection of sunlight by mirrors or known as the heliograph is an early method of optical wireless communication (OWC). Naturally, modern communication system reveals much higher data rates with better quality of service (QoS) compared to those ancient methods. There are many advantages of OWC which are important for a terrestrial system for example the usage of an outdoor free space optics (FSO) system. In this paper, a description and system performance characterization of the FSO such as attenuation, bit error rate (BER), Q factor and the type of detectors that are highly useful for detection in FSO systems are presented. The system are designed and simulated for performance characterization considering Subang terrestrial. Key words: bit error rate; photodetector; Q factor; terrestrial system

An active interconnecting mechanism for free-space optic applications

2007 ◽  
Author(s):  
Ping Zhang ◽  
Kevin Le ◽  
Lun-Chen Hsu ◽  
Praveen Pandojirao-Sunkojirao ◽  
Smitha Malalur-Nagaraja-Rao ◽  
...  
Keyword(s):  
Free Space ◽  
Free Space Optic

Soliton Pulse Generation for WDM-Based Free Space Optics Communication Using Microring Resonators

2018 ◽  
Vol 0 (0) ◽  
Author(s):  
Ali Shahidinejad
Keyword(s):  
Free Space ◽  
Kerr Effect ◽  
Pulse Generation ◽  
Microring Resonator ◽  
Free Space Optics ◽  
Microring Resonators ◽  
Space Optics ◽  
Soliton Pulse ◽  
Chaotic Signals ◽  
Nonlinear Kerr Effect

AbstractA microring resonator (MRR) and an add/drop devices are presented to generate picosecond solitonic pulse and signal as multichannel localized wavelengths, applicable for WDM-based free space optics (FSO) communication. A Gaussian pulse is inputted to the first ring resonator of the proposed system. Because of the nonlinear Kerr effect, chaotic signals are created. The second MRR filters the generated signals and shape solitonic pulses, where the accurate FWHM of 20 ps with intensity of 2.45 W are obtained. The add/drop device is applied for tuning the solitonic pulses. Results indicate that a range of solitonic wavelengths from 1550 nm to 1600 nm are obtained, where FSR and FWHM are 144 pm and 5 pm, respectively. Finally, performance of the proposed MRR system is evaluated in terms of bit error rate (BER) and Q factor. In the analysis, the proposed solitonic pulse is compared to conventional counterparts. Using the proposed MRR system, BER and Q factor of WDM-based FSO are considerably improved.

A New Method for Photoelectric Device Simulation

2012 ◽  
Vol 182-183 ◽  
pp. 1023-1027
Author(s):  
Xiang Hua Zhang ◽  
Jian Guo Wang ◽  
Tai Jiao Du ◽  
Feng Liu ◽  
Zhi Hua Chen ◽  
...  
Keyword(s):  
Continuous Wave ◽  
Incident Light ◽  
Device Simulation ◽  
General Purpose ◽  
New Method ◽  
Carrier Generation ◽  
Absorbing Boundary ◽  
Photoelectric Device ◽  
Optical Carrier ◽  
Energy Law

A new method for photoelectric device simulation has been developed in our open source software “A Two-Dimensional General Purpose Semiconductor Simulator (GSS)”. Rigorous distribution of incident light in photoelectric device has been obtained by solving Helmholtz equation using finite element method (FEM) with uniaxial perfectly matched layer (UPML) as absorbing boundary. Optical carrier generation ratio has been calculated according to the conversation of energy law. Optical carrier generation ratio and I-V curve of a photoconductive diode induced by continuous wave laser are presented. Analysis shows that optical carrier generation calculated in GSS is more reasonable and I-V curve calculated in GSS agrees well with Medici’s.

The transmitter for indoor Free Space Optic networks

2013 ◽  
Author(s):  
Jan Vitasek ◽  
Petr Siska ◽  
Jan Latal ◽  
Stanislav Hejduk ◽  
Andrej Liner ◽  
...  
Keyword(s):  
Free Space ◽  
Free Space Optic
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