Results 181 to 190 of about 2,950,365 (215)

Optical beat interference suppression using semiconductor optical amplifier in reflective semiconductor optical amplifier based WDM/SCM-passive optical network

2006 Optical Fiber Communication Conference and the National Fiber Optic Engineers Conference, 2006
We proposed a novel method suppressing the OBI noise in RSOA based WDM/SCM-PON. This is to use the SOA operated in gain saturation range, which acts as high pass filter. CNR increased up to 15 dB compared with that without using a SOA.
null Yong-Yuk Won, null Sang-Hoon Lee, null Jeung-Mo Kang, null Sang-Kook Han, null Eui-Suk Jung, null Byung-Whi Kim   +5 more
openaire   +1 more source

Dibit-based OR and NOR gates using reflective semiconductor optical amplifier

Journal of Nonlinear Optical Physics & Materials, 2023
In the all-optical domain, the reflective semiconductor optical amplifier (RSOA) creates due attention in the research community because the RSOA has high gain, low-power consumption, high-speed signal processing ability as well as low noise performance. In this work, we have proposed dibit-based OR and NOR gates using RSOA.
Surajit Bosu, Baibaswata Bhattacharjee
openaire   +1 more source

Ultrabroadband reflective semiconductor optical amplifier using superimposed quantum dots

Journal of Nanophotonics, 2021
An approach has been suggested for the simulation of a quantum dot reflective semiconductor optical amplifier (RSOA) with wideband optical gain. This model is implemented by superimposing different quantum dot groups with various radii using solution process nanotechnology, which is both practical and frugal.
Farshad Serat Nahaei, Ali Rostami, Samiye Matloub   +2 more
openaire   +1 more source

Reflective semiconductor optical amplifier modulator dynamic model

Numerical Simulation of Optoelectronic Devices, 2014, 2014
A dynamic model of a bulk reflective SOA is described. The model includes spontaneous emission and uses full bandstructure based calculations of the active material gain coefficients. The model is used to simulate the use of an RSOA to modulate an input CW lightwave at multi Gb/s data rates using bias current modulation.
openaire   +1 more source

Reduced Model for the Nonlinear Response of Reflective Semiconductor Optical Amplifiers

IEEE Photonics Technology Letters, 2013
Reflective semiconductor optical amplifiers (RSOAs) became a key-technology for the implementation of next generation local area passive optical networks (PONs). In this letter, we present a semi-analytic study of their nonlinear dynamics, based on the derivation of a reduced model that gives the input-output RSOA transmission function as the solution ...
ANTONELLI, CRISTIAN, MECOZZI, ANTONIO
openaire   +2 more sources

Modulation Characteristics of Reflective Quantum Dot Semiconductor Optical Amplifiers

Asia Communications and Photonics Conference, 2017
G-I relation linear range and modulation bandwidth of R-QDSOA are investigated. The results showed that R-QDSOA had higher G-I relation linear range and the modulation bandwidth easily reached above 17GHz, which could be further improved by optimizing parameters.
Yu Yin, Yun Ling, Jie Chen, Hao Li, Kun Qiu   +4 more
openaire   +1 more source

Periodic filaments in reflective broad area semiconductor optical amplifiers

Applied Physics Letters, 1992
Filaments with a regular spacing of the order of 25 μm are experimentally observed in double-pass broad area GaAlAs amplifiers for near normal injection angle. Their formation is attributed to nonlinear interaction between counterpropagating beams and Talbot self-imaging.
M. Tamburrini, L. Goldberg, D. Mehuys
openaire   +1 more source

A fiber-optical cable television system using a reflective semiconductor optical amplifier

Laser Physics, 2013
This investigation demonstrates a fiber-optical cable television system using a reflective semiconductor optical amplifier (RSOA) for uplink transmission. The downstream signal is cable television and the upstream signal is generated by remodulating the downstream signal via an RSOA with a radio-frequency signal.
P C Peng, K C Shiu, W C Liu, K J Chen, H H Lu   +4 more
openaire   +1 more source

Efficient dynamic modeling of reflective semiconductor optical amplifier

2013
RSOA is considered a strong candidate to play an important role in realizing the next generation WDM PON, based on the wavelength reuse concept. Therefore, accurate and efficient modeling of RSOA is of significant importance. We present a time-domain wideband model for simulation of spatial and temporal distribution of photons and carriers in a bulk ...
Vujicic, Zoran, Dionísio, Rogério Pais, Shahpari, Ali, Pavlovic, Natasa B., Teixeira, António   +4 more
openaire   +1 more source

Self-seeding reflective semiconductor optical amplifiers for WDM Access Networks (invited)

2013 9th International Conference on Information, Communications & Signal Processing, 2013
The self-seeding of reflective semiconductor optical amplifiers (RSOAs) was proposed to achieve colorless operation in optical network units (ONUs) of wavelength division multiplexed passive optical networks (WDM-PONs). With the self-seeding technique, the use of external optical seeding sources and temperature tracking to maintain wavelength alignment,
openaire   +2 more sources