8CH AWG Multi/Demultiplexer With MEMS Variable Optical Attenuator

2003 ◽  
Author(s):  
K. Ishikawa ◽  
Q. Yu
Keyword(s):  
Wavelength Division Multiplexing ◽  
Optical Signal ◽  
Arrayed Waveguide Grating ◽  
Optical Contrast ◽  
Network Systems ◽  
Micro Electro Mechanical Systems ◽  
Wavelength Division ◽  
Power Intensity ◽  
Variable Optical Attenuator ◽  
Arrayed Waveguide

An integrated arrayed waveguide grating multi/demultiplexer (AWG) with a micro-electro-mechanical systems (MEMS) based variable optical attenuator (VOA) is reported. The device consists of an AWG based on silica and a MEMS-VOA chip. The MEMS chip includes 100 μm × 100 μm polysilicon shutter plates coated with gold and electrostatic comb-drive actuators. The MEMS chip is interposed in a trench located in the middle of the I/O waveguides of the AWG to tune the optical transmitting power intensity through the waveguides continuously. The MEMS-VOA shutters have more than a 10 μm displacement. Using those shutters, 30 dB optical contrast from 5 dB at the transmit state to 35 dB at the isolation state is achieved. The obtained attenuation contrast is greater than that of a conventional waveguide-based Mach-Zehnder interferometer VOA and sufficient to adjust and equalize the optical signal power in the wavelength division multiplexing (WDM) network systems.

scholarly journals A Simple All-Optical Water Level Monitoring System Based on Wavelength Division Multiplexing with an Arrayed Waveguide Grating

Sensors ◽  
2019 ◽  
Vol 19 (14) ◽  
pp. 3095 ◽  
Author(s):  
Hoon-Keun Lee ◽  
Jaeyul Choo ◽  
Gangsig Shin
Keyword(s):  
Water Level ◽  
Monitoring System ◽  
Wavelength Division Multiplexing ◽  
Arrayed Waveguide Grating ◽  
Waveguide Grating ◽  
Wavelength Division ◽  
Rayleigh Backscattering ◽  
Arrayed Waveguide ◽  
Level Monitoring ◽  
Water Level Monitoring

We propose and demonstrate a simple water level monitoring system based on the wavelength division multiplexing (WDM) for the spent fuel pool (SFP) at a nuclear power plant. The basic principle is based on the measurement of the optical power spectra by the Fresnel reflection according to the change of the refractive index at the end facet of the optical fiber tip (OFT). An arrayed waveguide grating (AWG) is employed to achieve multi-channel sensing capability with a C-band broadband light source (BLS) based on amplified spontaneous emission (ASE). The feasibility of the proposed scheme is investigated with a simulation and experimentation. We also investigate the limiting factor for remote transmission. The system performance is degraded by the Rayleigh backscattering of the BLS light, but it can be operated over long distances within 10 km with 5 dB of difference peak power margin.

scholarly journals ARRAYED WAVEGUIDE GRATING PADA DENSE WAVELENGTH DIVISION MULTIPLEXING

TRANSIENT ◽  
2018 ◽  
Vol 7 (1) ◽  
pp. 179
Author(s):  
Arkidianabela Anggara Dewi ◽  
Teguh Prakoso ◽  
Aghus Sofwan
Keyword(s):  
Wavelength Division Multiplexing ◽  
Q Factor ◽  
Arrayed Waveguide Grating ◽  
Dense Wavelength Division Multiplexing ◽  
Waveguide Grating ◽  
Wavelength Division ◽  
Waveguide Filters ◽  
Arrayed Waveguide ◽  
Array Waveguide Grating

DWDM (Dense Wavelength Division Multiplexing) adalah suatu teknik multiplexing yang mampu mentransmisikan lebih dari 400 panjang gelombang dalam satu serat optik. Laju pengiriman data menggunakan media serat optik dapat mencapai 1 Tbps atau 1.000 Gbps. DWDM merupakan suatu perbaikan dari WDM. Inti perbaikan yang dimiliki oleh teknologi DWDM terletak pada jenis filter, serat optik dan penguat amplifier. Jenis filter yang umum dipergunakan salah satunya adalah  Array Waveguide Grating  (AWG).  Pada Penelitian ini dianalisis kinerja suatu Array Waveguide Filters (AWG) yang mampu digunakan pada DWDM.  Pada Penelitian ini dilakukan dengan menggunkan 2 software. Pertama, menggunakan software Optisystem 7 untuk memodelkan sistem DWDM. Kedua, menggunakan software OptiBPM untuk verifikasi AWG. Pada Optisystem didapatkan nilai konfigurasi DWDM yang optimal yaitu pada C Band dengan spasi kanal 50GHz dan jumlah wavelength 64. Sedangkan pada OptiBPM didapatkan untuk konfigurasi DWDM tersebut diperlukan AWG dengan dengan sudut orientasi 53 derajat, panjang FSR 1500um, lebar angular 11,4 derajat dengan ukuran 15000x10000um sehingga didapatkan nilai BER, Q-factor dan crosstalk yang memiliki perbedaan namun telah mencapai kriteria  yaitu dengan Q factor antara 8,43 sampai dengan 14,09 sedangkan untuk BER dari 1,719x10-40 sampai dengan 1,19x10-17 dan crosstalk antara -149 dB sampai dengan -40,8 dB.

scholarly journals Design of Novel Fiber Optical Flexible Routing System

2019 ◽  
Vol 9 (22) ◽  
pp. 4763
Author(s):  
Po-Tsung Wu ◽  
Tsair-Chun Liang
Keyword(s):  
Wavelength Division Multiplexing ◽  
Optical Network ◽  
Optical Signal ◽  
Arrayed Waveguide Gratings ◽  
Wavelength Division ◽  
Network Applications ◽  
Fiber Optic Network ◽  
Cross Connect ◽  
Arrayed Waveguide ◽  
Optic Network

In this paper, we propose a new versatile routing device that utilizes arrayed waveguide gratings (AWGs), optical switches, and optical circulators to implement reconfigurable optical add/drop multiplexers (ROADMs), optical interleavers, and optical cross-connect (OXC). With the development of dense wavelength division multiplexing (DWDM) technology, ROADM and OXC technologies have also been put into practical use. Thus, the optical signal can be routed directly in the optical network according to its wavelength without the need for optical-electrical-optical (OEO) conversion. Although different optical network units (ONUs) have different bandwidth requirements, the use of optical interleavers has successfully solved the connection problem between old and new systems. According to the numerical experiments of static characteristics, the proposed routing device can effectively implement three different functionalities, thereby providing greater flexibility for fiber optic network applications.

scholarly journals Three-dimensional wavelength-division multiplexing interconnects based on a low-loss SixNy arrayed waveguide grating

2021 ◽  
Vol 29 (22) ◽  
pp. 35261
Author(s):  
Jaegyu Park ◽  
Jiho Joo ◽  
Myung-Joon Kwack ◽  
Gyungock Kim ◽  
Sang-Pil Han ◽  
...  
Keyword(s):  
Wavelength Division Multiplexing ◽  
Three Dimensional ◽  
Arrayed Waveguide Grating ◽  
Low Loss ◽  
Waveguide Grating ◽  
Wavelength Division ◽  
Arrayed Waveguide
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