Bi-directional 25G/50G TDM-PON with Extended Power Budget using 25G APD and Coherent Amplification

2017 ◽  
Author(s):  
Doutje van Veen ◽  
Vincent Houtsma
Keyword(s):  
Power Budget ◽  
Extended Power ◽  
Coherent Amplification

Coherent amplification, reflection, and induced superradiance in activated media.

1986 ◽  
Vol 150 (11) ◽  
pp. 453 ◽  
Author(s):  
A.M. Leontovich ◽  
A.M. Mozharovskii ◽  
E.D. Trifonov
Keyword(s):  
Coherent Amplification

High speed optical switching gain based EDFA model with 30 Gb/s NRZ modulation code in optical systems

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Mahmoud M. A. Eid ◽  
Ahmed Nabih Zaki Rashed ◽  
Keyword(s):  
Optical Fiber ◽  
High Speed ◽  
Optical Switching ◽  
Fiber Amplifier ◽  
Optical Systems ◽  
Power Budget ◽  
Erbium Doped Fiber Amplifier ◽  
Amplifier Model ◽  
Modulation Rate ◽  
Modulation Code

AbstractThis study presents high speed optical switching gain based Erbium doped fiber amplifier model. By using the proposed model the optical fiber loss can be minimized. The system is stabilized with the power budget of 25.875 mW a long 75 km as a length of optical fiber in this study can be verified. The modulation rate of 10 Gb/s can be upgrade up to reach 30 Gb/s. The suitable power for the optical transmitter is −2.440 dBm and NRZ modulation code is verified. The receiver sensitivity can be upgraded with the minimum bit error rate and max Q factor are 1.806 e−009 and 5.899.

Demonstration of High-Power Budget TDM-PON System With 50 Gb/s PAM4 and Saturated SOA

2021 ◽  
Vol 39 (9) ◽  
pp. 2762-2768
Author(s):  
Han Hyub Lee ◽  
KwangOk Kim ◽  
Kyeong-Hwan Doo ◽  
Jung-Yeol Oh ◽  
Gap-Yeol Moon ◽  
...  
Keyword(s):  
High Power ◽  
Power Budget

scholarly journals Extended power-law scaling of air permeabilities measured on a block of tuff

2012 ◽  
Vol 16 (1) ◽  
pp. 29-42 ◽  
Author(s):  
M. Siena ◽  
A. Guadagnini ◽  
M. Riva ◽  
S. P. Neuman
Keyword(s):  
Power Law ◽  
Structure Functions ◽  
Self Similarity ◽  
Scaling Exponents ◽  
Multi Scale ◽  
Sample Structure ◽  
Heavy Tailed ◽  
Non Gaussian ◽  
Nonlinear Fashion ◽  
Extended Power

Abstract. We use three methods to identify power-law scaling of multi-scale log air permeability data collected by Tidwell and Wilson on the faces of a laboratory-scale block of Topopah Spring tuff: method of moments (M), Extended Self-Similarity (ESS) and a generalized version thereof (G-ESS). All three methods focus on q-th-order sample structure functions of absolute increments. Most such functions exhibit power-law scaling at best over a limited midrange of experimental separation scales, or lags, which are sometimes difficult to identify unambiguously by means of M. ESS and G-ESS extend this range in a way that renders power-law scaling easier to characterize. Our analysis confirms the superiority of ESS and G-ESS over M in identifying the scaling exponents, ξ(q), of corresponding structure functions of orders q, suggesting further that ESS is more reliable than G-ESS. The exponents vary in a nonlinear fashion with q as is typical of real or apparent multifractals. Our estimates of the Hurst scaling coefficient increase with support scale, implying a reduction in roughness (anti-persistence) of the log permeability field with measurement volume. The finding by Tidwell and Wilson that log permeabilities associated with all tip sizes can be characterized by stationary variogram models, coupled with our findings that log permeability increments associated with the smallest tip size are approximately Gaussian and those associated with all tip sizes scale show nonlinear variations in ξ(q) with q, are consistent with a view of these data as a sample from a truncated version (tfBm) of self-affine fractional Brownian motion (fBm). Since in theory the scaling exponents, ξ(q), of tfBm vary linearly with q we conclude that nonlinear scaling in our case is not an indication of multifractality but an artifact of sampling from tfBm. This allows us to explain theoretically how power-law scaling of our data, as well as of non-Gaussian heavy-tailed signals subordinated to tfBm, are extended by ESS. It further allows us to identify the functional form and estimate all parameters of the corresponding tfBm based on sample structure functions of first and second orders.

Human Brain Like Memory Behavior in the Magnetic Domain Expansion Type Magneto-Optical Disk

2001 ◽  
Vol 674 ◽  
Author(s):  
Norio Ota ◽  
Hiroyuki Awano ◽  
Manabu Tani ◽  
Susumu Imai
Keyword(s):  
Magnetic Field ◽  
Human Brain ◽  
Magnetic Domain ◽  
Field Pattern ◽  
Human Response ◽  
External Stimulation ◽  
Stored Information ◽  
The Magnetic Field ◽  
Timing Phase ◽  
Coherent Amplification

ABSTRACTMagnetic Amplifying Magneto-Optical System (MAMMOS) shows human brain like memory behavior. Magnetic field and laser power have threshold to recover the stored memory like the human response of remembering. MAMMOS also has a feature to amplify very small recorded signals like our recovery of memory, e.g. fifty years ago episode.By adding the meaningful information on the magnetic field pattern, we can get some correlation between our memory and external stimulation. Such scheme is named as “the Active readout MAMMOS” which is analogues to the human process of remembering the memory.If the applied field pattern and timing phase just coincide with stored information, there occurs the coherent amplification of MAMMOS signal. We can utilize such phenomena as the trigger of “Memory Association”.

scholarly journals A STUDY OF DISORDERED SYSTEMS WITH GAIN: STOCHASTIC AMPLIFICATION

2000 ◽  
Vol 14 (16) ◽  
pp. 1669-1681 ◽  
Author(s):  
SANDEEP K. JOSHI ◽  
A. M. JAYANNAVAR
Keyword(s):  
Reflection Coefficient ◽  
Disordered Systems ◽  
Random Phase Approximation ◽  
Random Medium ◽  
Random Phase ◽  
Localization Length ◽  
Critical Length ◽  
Sample Length ◽  
Coherent Amplification ◽  
Transmission And Reflection

A study of statistics of transmission and reflection from a random medium with stochastic amplification as opposed to coherent amplification is presented. It is found that the transmission coefficient t, for sample length L less than the critical length L c grows exponentially with L. In the limit L→∞ transmission decays exponentially as < ln t>=-L/ξ where ξ is the localization length. In this limit reflection coefficient r saturates to a fixed value which shows a monotonic increase as a function of strength of amplification α. The stationary distribution of super-reflection coefficient agrees well with the analytical results obtained within the random phase approximation (RPA). Our model also exhibits the well known duality between absorption and amplification. We emphasize the major differences between coherent amplification and stochastic amplification where-ever appropriate.

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