A Modulation-Format-Free Ditherless Bias Control Technique for MZ Modulator with Monitoring the Slope Value of Average Output Optical Power

2013 ◽  
Author(s):  
Yupeng Li ◽  
Yangan Zhang ◽  
Yongqing Huang ◽  
Yanfei Hao ◽  
Jinjing Tao
Keyword(s):  
Optical Power ◽  
Control Technique ◽  
Average Output ◽  
Output Optical Power ◽  
Modulation Format

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

scholarly journals Мощные квантово-каскадные лазеры с длиной волны генерации 8 μm

2019 ◽  
Vol 45 (14) ◽  
pp. 48
Author(s):  
А.В. Бабичев ◽  
В.В. Дюделев ◽  
А.Г. Гладышев ◽  
Д.А. Михайлов ◽  
А.С. Курочкин ◽  
...  
Keyword(s):  
Molecular Beam Epitaxy ◽  
Quantum Cascade Laser ◽  
Room Temperature ◽  
Molecular Beam ◽  
Optical Power ◽  
Output Optical Power ◽  
Quantum Cascade ◽  
Fabry Perot ◽  
Cleaved Facets ◽  
Lattice Matched

The heterostructure of a quantum-cascade laser based on In0.53Ga0.47As/Al0.48In0.52As heteropair lattice matched with the InP was grown by molecular beam epitaxy. InP layers was used to form the optical waveguide. Room temperature lasing in the spectral range of 8 μm in the standard ridge geometry of a Fabry-Perot cavity formed by cleaved facets with peak output optical power of 0.45 W was obtained.

Effects of local oscillator on the performance of DP-QPSK WDM system with channel spacing of 37.5 GHz

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Neeraj Sharma ◽  
Sunil Agrawal ◽  
Vinod Kapoor ◽  
Sumit Budhiraja
Keyword(s):  
Optical Power ◽  
Local Oscillator ◽  
Narrow Channel ◽  
Laser Linewidth ◽  
Phase Shift Keying ◽  
Channel Spacing ◽  
Modulation Format ◽  
Quadrature Phase ◽  
Shift Keying ◽  
Frequency Grid

AbstractDual-polarization quadrature phase shift keying (DP-QPSK) modulation format is emerging as a main contender for 37.5 GHz frequency grid of WDM systems. However, the optical add drop multiplexers (OADMs) affect the performance of the system because of narrow channel spacing. The local oscillator (LO) is an important component of the digital coherent receiver. This paper analyzes the effects of LO parameter on the performance of the considered system. It is exhibited that optimum range of optical power and laser linewidth of the LO helps in improving the performance of the considered system.

72% wallplug efficiency and 16W CW front facet output optical power from 100-µm-aperture laser diode

2005 ◽  
Author(s):  
Nikita A. Pikhtin ◽  
Sergey O. Slipchenko ◽  
Dmitry A. Vinokurov ◽  
Maxim A. Khomylev ◽  
Ilya S. Tarasov
Keyword(s):  
Laser Diode ◽  
Optical Power ◽  
Output Optical Power ◽  
Front Facet

Low-Distortion and High-Output Optical Power Amplifier for Analog Transmission Employing Hybrid Erbium-Doped Fiber Configuration

1996 ◽  
Vol 2 (2) ◽  
pp. 195-200 ◽  
Author(s):  
Masayuki Shigematsu ◽  
Masashi Onishi ◽  
Tomonori Kashiwada ◽  
Hisao Go ◽  
Motoki Kakui ◽  
...  
Keyword(s):  
Power Amplifier ◽  
Optical Power ◽  
Output Optical Power ◽  
Erbium Doped ◽  
Low Distortion ◽  
Analog Transmission ◽  
High Output

A Software-Based and Dither-Less Modulators Bias Control Technique

2013 ◽  
Vol 411-414 ◽  
pp. 828-831
Author(s):  
Yan Fei Hao ◽  
Yan Gan Zhang ◽  
Yv Peng Li
Keyword(s):  
Control System ◽  
Automatic Control ◽  
Output Power ◽  
Bit Error Rate ◽  
Error Rate ◽  
Control Technique ◽  
Experimental Platform ◽  
Modulation Format ◽  
Optical Output ◽  
Rf Signal

A software-based bias control system of push-pull Mach-Zehnder Modulators (MZMs) without dither tone is described in this paper. The slope of the average optical output power respect to the bias voltage is used to control the operating bias points in the automatic control system. The paper analyses the theory of automatic bias control intensively and verifies the effectiveness of the proposed technique which is a modulation-format-free method under the RF signal through testing and contrasting the BER (bit error rate) between the new technique and manual measure on the experimental platform.

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