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TL;DR: In this paper, a high gain-naturally flattened L-band erbium-doped fiber amplifier (EDFA) is demonstrated, which uses two bidirectionally pumped lasers for exciting Er3+ in three cascaded fiber amplifiers.
Abstract: In the letter, a high gain-naturally flattened L-band erbium-doped fiber amplifier (EDFA) is demonstrated. The system uses two bidirectionally pumped lasers for exciting Er3+ in three cascaded fiber amplifiers. The maximum gain of ∼36.4 dB and equalized gain of over 26 dB in the absence of any gain flattening filter with ∼2.5-dB variation over 35 nm (1572–1608 nm) was obtained. Studies for varying amplifier lengths; signal power and pump powers have also been reported. The proposed EDFA has a noise figure below 5 dB and was found to be stable at extreme temperatures. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:2053–2055, 2014
6 citations
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TL;DR: In this article, a comparative study between symmetric and asymmetric straggle architecture, where asymmetric nature is observed by considering straggles in source and drain side alternatively by using the data obtained from 2D numerical simulator Sentaurus TCAD, is presented.
6 citations
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06 Mar 2009TL;DR: A robust scheme to segment unconstrained handwritten Bangla words into characters using a combination of basic strokes based on the concept of downside movement of stroke is proposed.
Abstract: To take care of variability involved in the writing style of different individuals in this paper we propose a robust scheme to segment unconstrained handwritten Bangla words into characters. Online handwriting recognition refers to the problem of interpretation of handwriting input captured as a stream of pen positions using a digitizer or other pen position sensor. For online recognition of word the segmentation of word into basic strokes is needed. For word segmentation, at first, we divide the word image into two different zones. The upper zone is taken as the 1/3rd of the height of the total image. Now, based on the concept of downside movement of stroke in this upper zone we segment each word into a combination of basic strokes. We segment at a pixel where the slope of six consecutive pixels satisfies certain angular value. We tested our system on 5500 Bangla word data and obtained 81.13% accuracy on word data from the proposed system.
5 citations
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01 Nov 2014TL;DR: The current trends and application of NFC technology in India is focused on, both existing NFC applications and some conceivable future situations are analyzed.
Abstract: Near Field Communication (NFC) is an emerging wireless short-range communication technology innovation that is based on existing standards of the Radio Frequency Identification (RFID) infrastructure In this paper we give an overview of NFC technology and discuss its adaptation worldwide We then focus on the current trends and application of NFC technology in India Both existing NFC applications and some conceivable future situations are analyzed in this connection Furthermore, security concerns, difficulties and present conflicts are also discussed
5 citations
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TL;DR: In this paper, the bipartite steering violation in multi-partite systems was studied and a trade-off relation between genuine entanglement present in a tripartite state and maximum bipartitic steering violation by reduced pairwise qubit systems was derived.
Abstract: In the present work we address the question of how bipartite steering violation takes place among multi-partite systems (where each sub-system have Hilbert space dimension restricted to two) based on the maximal violations of the bipartite steering inequality of the reduced pairwise qubit systems. We have derived a trade-off relation which is satisfied by those pair wise bipartite maximal steering violations, which physically can be understood as providing restrictions on the distribution of steering among sub systems. For a three-qubit system, it is impossible that all pairs of qubits violate the steering inequality, and once a pair of qubits violates the steering inequality maximally, the other two pairs of qubits must both obey the steering inequality. We also present a complementarity relation between genuine entanglement present in a tripartite state and maximum bipartite steering violation by its reduced states.
5 citations
Authors
Showing all 581 results
Name | H-index | Papers | Citations |
---|---|---|---|
Debnath Bhattacharyya | 39 | 578 | 6867 |
Samiran Mitra | 38 | 198 | 5108 |
Dipankar Chakravorty | 35 | 369 | 5288 |
S. Saha Ray | 34 | 217 | 3888 |
Tai-hoon Kim | 33 | 526 | 4974 |
Anindya Sen | 29 | 109 | 3472 |
Ujjal Debnath | 29 | 335 | 3828 |
Anirban Mukhopadhyay | 29 | 169 | 3200 |
Avijit Ghosh | 28 | 121 | 2639 |
Mrinal K. Ghosh | 26 | 64 | 2243 |
Biswanath Bhunia | 23 | 75 | 1466 |
Jayati Datta | 23 | 55 | 1520 |
Nabarun Bhattacharyya | 23 | 136 | 1960 |
Pinaki Bhattacharya | 19 | 114 | 1193 |
Dwaipayan Sen | 18 | 71 | 1086 |