Results 321 to 330 of about 319,656 (388)

Monolithic Adjustable Gain-Clamped Semiconductor Optical Amplifier

Journal of Lightwave Technology, 2013
We report a monolithic adjustable gain-clamped semiconductor optical amplifier (AGC-SOA). The device consists of two tunable gratings and a gain section and enables the gain of the SOA to be regulated without loss of saturated output power. Gain control is achieved by adjusting the wavelength overlap of two Distributed Bragg Reflector gratings ...
Jehan Akbar, Opeoluwa A. Odedina, Craig Michie, Ivan Andonovic, Anthony E. Kelly   +4 more
openaire   +1 more source

Cross gain modulation in semiconductor optical amplifier

SPIE Proceedings, 1999
We have performed cross gain modulation measurements on a 2-section semiconductor optical amplifier (SOA) using pulsed pump and probe beams. The probe amplitude and pulse width under this condition has been measured and analyzed. The results of the analysis are in agreement with the experimental data.
Honglei Fan, Chiming Wu, Niloy K. Dutta, Uziel Koren, C. H. Chen, Alfonso B. Piccirilli   +5 more
openaire   +1 more source

Semiconductor optical amplifiers with nanostructured gain material

Frontiers in Optics 2008/Laser Science XXIV/Plasmonics and Metamaterials/Optical Fabrication and Testing, 2008
We describe state-of-the-art semiconductor optical amplifiers based on nanostructured gain media. We highlight the broad bandwidth and the complex cross saturation dynamics which enables multi-wavelength amplification and signal processing.
Johann Peter Reithmaier, Gadi Eisenstein
openaire   +1 more source

Gain-coupled optical logic in semiconductor lasers

Applied Optics, 1990
A new form of optical logic device has been devised giving NOT, NOR and NAND functions. It is based on gain competition between two optical modes in a semiconductor waveguide cavity. These modes are spatially separated at the input-output facet providing high input/output isolation. The input also sees very low reflection. Although the device relies on
openaire   +2 more sources

Cross gain saturation in semiconductor optical amplifier

Conference Proceedings. LEOS'98. 11th Annual Meeting. IEEE Lasers and Electro-Optics Society 1998 Annual Meeting (Cat. No.98CH36243), 2002
We have carried out gain saturation experiments using pulsed pump and probe beams derived from gain switched DFB semiconductor optical amplifier lasers. The widths of both pump and probe pulses were 35 ps. The gain saturation of the probe takes place only when there is temporal overlap of the pump and probe beams in the amplifier.
H. Fan, C. Wu, N.K. Dutta, U. Koren, C.H. Chen   +4 more
openaire   +1 more source

Gain recovery dynamics in semiconductor optical amplifier

Optics Communications, 2001
We develop a time-domain model for gain recovery dynamics in a semiconductor optical amplifier (SOA). This model allows to explain the gain overshoot which can be observed in the temporal dynamics of SOA gain after the crossing of a short saturating pump pulse. We show the good agreement between experimental and numerical results.
F. Ginovart, J.C. Simon, I. Valiente
openaire   +1 more source

Variable Gain Semiconductor Optical Linear Amplifier (OLA)

SPIE Proceedings, 2002
The semiconductor optical amplifier (SOA) is a versatile component that can be deployed to meet the expanding applications associated with the introduction of additional functionalities at the optical level in wavelength division multiplexed systems. The future network requires low cost, small footprint, directly controllable amplification throughout ...
Michie, W.C., Kelly, A.E., Tomlinson, A., Andonovic, I.   +3 more
openaire   +1 more source

Cross-Gain Compression in Semiconductor Optical Amplifiers

Journal of Lightwave Technology, 2007
In this paper, we present a novel scheme that exploits cross-gain modulation (XGM) in semiconductor optical amplifiers (SOAs) without overall pattern effects. This technique uses two signals with reversed-intensity modulation and different wavelength to exploit propagation and gain-compression dynamics in gain-saturated SOAs at almost constant overall ...
CONTESTABILE, GIAMPIERO, R. PROIETTI, N. CALABRETTA, CIARAMELLA, ERNESTO   +3 more
openaire   +2 more sources

Gain recovery of bulk semiconductor optical amplifiers

IEEE Photonics Technology Letters, 1998
The gain recovery time of 1.55-/spl mu/m bulk semiconductor optical amplifiers (SOA's) with lengths from 500 to 1500 /spl mu/m has been measured with a continuous-wave (CW) probe in the time domain. It is shown to decrease with increasing length down to 60 ps for the longest SOA. This behavior is theoretically explained.
F. Girardin, G. Guekos, A. Houbavlis
openaire   +1 more source

Single Wide Band Traveling Wave Semiconductor Optical Amplifiers for All Optical Bidirectional Wavelength Conversion

Journal of optical communications, 2019
Wavelength division multiplexing (WDM) is a very important technique to utilize the bandwidth of optical fiber; multiple channels can be transmitted in the same fiber cable at the same time, and each channel has individual wavelength.
I. Amiri, A. Rashed, A. Mohammed, M. Aboelazm   +3 more
semanticscholar   +1 more source