Silica-Based Planar Lightwave Circuits

1999 ◽  
Vol 597 ◽  
Author(s):  
Akira Himeno
Keyword(s):  
Wavelength Division Multiplexing ◽  
Optical Power ◽  
Wdm Networks ◽  
Planar Lightwave Circuits ◽  
Arrayed Waveguide Gratings ◽  
Wavelength Division ◽  
Optical Wavelength ◽  
Power Splitters ◽  
Planar Lightwave ◽  
Arrayed Waveguide

AbstractSilica-based planar lightwave circuits (PLC) provide various important devices for both optical wavelength division multiplexing (WDM) networks and optical access networks. This paper is an overview of recent progress in PLC technology including optical power splitters, arrayed-waveguide gratings, thermo-optic switches, and hybrid integrated PLCs.

Silica-Based Planar Lightwave Circuits and Their Applications

MRS Bulletin ◽  
2003 ◽  
Vol 28 (5) ◽  
pp. 365-371 ◽  
Author(s):  
Yoshinori Hibino
Keyword(s):  
Wavelength Division Multiplexing ◽  
Optical Waveguides ◽  
Wdm Networks ◽  
Planar Lightwave Circuits ◽  
Photonic Networks ◽  
Wavelength Division ◽  
Design Flexibility ◽  
Basic Characteristics ◽  
Planar Lightwave ◽  
Arrayed Waveguide

AbstractThis article reviews the fabrication technologies and optical characteristics of silica-based planar lightwave circuits (PLCs) on Si developed for photonic networks based on wavelength-division multiplexing (WDM). While there have been various planar optical waveguides made with different materials, silica-based PLCs are the most suitable for constructing practical devices because of their excellent design flexibility, stability, and reproducibility. These advantages mainly result from their material characteristics, that is, silica glass is chemically and physically stable. The article also describes the basic characteristics and recent development of arrayed waveguide grating (AWG) multiplexers/demultiplexers as a device application. Since AWGs offer the advantages of low-loss, high-output port counts and mass producibility, they have played a pivotal role in the construction of flexible, large-capacity WDM networks.

scholarly journals Receiver Integration with Arrayed Waveguide Gratings toward Multi-Wavelength Data-Centric Communications and Computing

2020 ◽  
Vol 10 (22) ◽  
pp. 8205
Author(s):  
Yoshiyuki Doi ◽  
Toshihide Yoshimatsu ◽  
Yasuhiko Nakanishi ◽  
Satoshi Tsunashima ◽  
Masahiro Nada ◽  
...  
Keyword(s):  
Wavelength Division Multiplexing ◽  
High Speed ◽  
Baud Rate ◽  
Arrayed Waveguide Gratings ◽  
Wavelength Division ◽  
Integrated Devices ◽  
Multi Wavelength ◽  
Integration Techniques ◽  
Waveguide Gratings ◽  
Arrayed Waveguide

This paper reviews receivers that feature low-loss multimode-output arrayed waveguide gratings (MM-AWGs) for wavelength division multiplexing (WDM) as well as hybrid integration techniques with high-speed throughput of up to 100 Gb/s and beyond. A design of optical coupling between higher-order multimode beams and a photodiode for a flat-top spectral shape is described in detail. The WDM photoreceivers were fabricated with different approaches. A 10-Gb/s photoreceiver was developed for a 1.25-Gb/s baud rate and assembled for eight-channel WDM by mechanical alignment. A receiver with 40-Gb/s throughput was built by using visual alignment for a 10-Gb/s baud rate and four-channel WDM. A 100-Gb/s receiver assembled by active alignment with a four-channel by 25-Gb/s baud rate is the basis for beyond-100 Gb/s and future multi-wavelength integrated devices toward data-centric communications and computing.

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.

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 EDFA AND EYCDFA POWER BOOSTER FOR SECURED, HIGH SPEED AND MULTIPLE WAVELENGTH SERVICES IN OPTICAL COMMUNICATION SYSTEMS USING WDM AND QUAD-SINGLE FORWARD AND TRI BACKWARD PUMPING TECHNIQUE

2021 ◽  
Vol 5 (12) ◽  
Author(s):  
S. Semmalar ◽  
S. Malarkkan
Keyword(s):  
Wavelength Division Multiplexing ◽  
Optical Communication ◽  
Communication Systems ◽  
High Speed ◽  
Optical Power ◽  
Fiber Amplifier ◽  
Signal Power ◽  
Erbium Doped Fiber Amplifier ◽  
Output Optical Power ◽  
Wavelength Division

Proposed the EDFA and EYCDFA power booster (Erbium Doped Fiber Amplifier- Erbium ytterbium co doped fiber amplifier) with quad pumping for high speed and multi wavelength services in an optical communication. The proposed EDFA and EYCDFA power booster with WDM(Wavelength division multiplexing) simulated by dual forward and Backward pumping, Dual-backward pumping, Tri-single forward and dual backward pumping and Quadsingle forward and tri-backward pumping with respect to Pump power and fiber Length. The parameters Input Optical power, Output Optical power, Forward Signal power, Backward Signal power measured and determined the speed of transmission in all types of pumping methods. From that the proposed EDFA- ans EYCDFA power booster with WDM quad pumping is the best suitable for secured high speed optical telecommunication systems. The results shown in Quad pumping Output optical power is maximum 25.2dB and optimum spectral forward Signal power is 30.5dBm and very less spectral optical backward signal power of -25.4dBm with Length 5m

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