10 Gb/s SCM system using optical single side-band modulation

Hui, Rongqing; Zhu, Bin; Huang, Ray; Allen, Christopher T.; Demarest, K.; Richards, D.

doi:10.1109/ofc.2001.927919

Cited by 13 publications

(8 citation statements)

References 4 publications

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“…Internal multi-band antennas have been traditionally implemented using self-resonant planar inverted-F antenna type antenna elements [1][2][3][4][5][6][7]. By utilizing parasitic resonators and meandering, such antenna structures can be designed to simultaneously cover the operating bands of E-GSM900 (or GSM850), GSM1800, PCS1900, and UMTS systems [1][2][3][4][5][6][7].…”

Section: Resultsmentioning

confidence: 99%

“…By utilizing parasitic resonators and meandering, such antenna structures can be designed to simultaneously cover the operating bands of E-GSM900 (or GSM850), GSM1800, PCS1900, and UMTS systems [1][2][3][4][5][6][7]. The volumes occupied by these antenna elements, varying from 4.6 cm 3 [4,7] up to 9.3 cm 3 [3], seem to be too large for future needs.…”

Section: Resultsmentioning

confidence: 99%

“…The volumes occupied by these antenna elements, varying from 4.6 cm 3 [4,7] up to 9.3 cm 3 [3], seem to be too large for future needs. The heights of these antenna elements vary from 3 mm [6] up to 7-8.5 mm [1][2][3][4][5]. An attractive alternative for multi-band planar inverted-F antenna type antennas are internal monopole type antenna structures [8,9].…”

Section: Resultsmentioning

confidence: 99%

“…There has been a growing interesting for the wireless communication applications operating in multiband, such as wireless local area networks (WLANs), global system for mobile communications (GSM), and wireless code-division multiple-access (WCDMA) [1]. In the new developed WLANs standards, dualband BPFs have been gaining wide attention for IEEE 802.11b/g (2.4/2.45 GHz) and IEEE 802.11a (5.2ϳ5.8 GHz) specifications [2].…”

Section: Introductionmentioning

confidence: 99%

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Design of a compact dual‐band bandpass filter using trisection stepped impedance resonators

Chang

Weng

2007

Micro & Optical Tech Letters

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to the chip input. The output constellation for this configuration is shown in Figure 4(b). Only a slight degradation of the constellation compared to the electrical back-to-back measurement cab be observed. CONCLUSIONSWe have shown the feasibility of a 40 Gb/s IM/DD communication system using 10G optical components based on a BEM scheme of the SCM type and the use of DSP. Increased circuit complexity is of reasonable proportion and processing is implemented in lowcost CMOS IC technology. We demonstrated the transmission of a single microwave channel through 30 km of SMF using a test chip that by itself constitutes the highest-speed integrated CMOS QAM transceiver to our knowledge. Potential applications for the current system span different types of short reach low-cost interconnects (such as backplane, box-to-box and storage area networks). The integrated electrical transceiver can potentially be connected to other optical channels for low-cost metro applications. . Typically, the planar dual-band BPFs consisted of two circuits are individually designed for each one band [3]. However, these approaches need extra impedance matching networks for a diplexer-like structure, causing the large circuit size. Another way for designing dual-band BPF is developed by using a cascade of open-stub structures to achieve a dual-band performance [4]. Therefore, design of a compact and low loss BPF is a real challenge to the circuit designers nowadays. Among the popular resonator structures, stepped impedance resonator (SIR) is usually used. It was originally presented that the SIR can not only reduce the circuit size but also control the harmonics by properly tuning its impedance ratio (K) [5][6][7][8]. For instance, a dual-band BPF by using one-wavelength SIR with dual-mode structure was reported [6]. However, the second passband frequency was only dominated by the impedance ratio of the SIR. A slightly high insertion loss of two passbands and low passband selectivity were introduced because of the large discontinues appeared in SIR with very high K.In this letter, we propose a new compact dual-band BPF using trisection SIRs, which introduced two passbands located at 2.4/5.2 GHz through a single filter topology. The theory and guidelines for selecting the geometric parameters of SIRs are clearly presented in next section. Finally, the compact dual-band BPF is optimally designed, fabricated and characterized. K cot 2 ϭ tan 1 (odd-mode)(1)It is noted that the impedance ratio (K) and length of SIRs are varied to adjust the fundamental and the second resonances over a wide frequency range to obtain more design freedom. Thus, the 2 is proportional to the electrical length of SIR in this study, and the length ratio ␣ of the SIR is defined asSubstituting (3) into (1) and (2) can find:To appropriately design the dual-band frequency response, the relationship of resonant length t and length ratio ␣ for a SIR with K ϭ 0.5, 1, and 2 is shown in Figure 2. It is found the nth resonant mode occurs as functions of the impedance ratio (K) an...

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Design of a compact dual‐band bandpass filter using trisection stepped impedance resonators

Chang

Weng

2007

Micro & Optical Tech Letters

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“…For this measurement, the problem of phase ambiguity induced by unbalanced sidebands is avoided by using an optical single sideband modulator consisting of a dual electrode Mach-Zehnder modulator and an electrical hybrid coupler (Marki Microwave). [28][29][30] Due to the cutoff frequency of the quadrature hybrid coupler, an RF signal at 2.5 GHz was generated from the vector network analyzer (Agilent N5230A) and applied onto the optical single sideband modulator, where the electrical signal obtained after photodetection was fed back to the vector network analyzer for group delay measurement. Figure 6 illustrates the measured amplitude and phase responses in blue solid lines while displaying the theoretical responses in red dashed lines as a comparison.…”

Section: Radio Frequency Power Variationsmentioning

confidence: 99%

Optical single-sideband modulation based on silicon-on-insulator coupled-resonator optical waveguides

Song

Chew

et al. 2015

Opt. Eng

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Abstract. We propose and demonstrate for the first time an optical single-sideband (OSSB) modulation generation based on silicon-on-insulator coupled-resonator optical waveguides (CROWs) capable of operating at wide bandwidth with enhanced sideband suppression. The optimum order of the CROW filter was synthesized based on comprehensive performance analysis including optical sideband suppression and electrical power variation. Experimental results demonstrate an OSSB signal with sideband suppression as large as 23 dB. The performance of the proposed OSSB was demonstrated via compensating radio frequency (RF) power degradation in the transmission of the RF signal within the fiber.

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A 40‐Gb/s SCM optical communication system based on an integrated CMOS transceiver

Chen

Saibi

Sackinger

et al. 2007

Micro & Optical Tech Letters

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Dose‐intensive chemotherapy results in an obligatory period of severe neutropenia during which patients are at high risk of infection. While patient support with donor neutrophils is possible, this option is restricted due to donor availability and logistic complications. To overcome these problems, we explored the possibility of large scale ex vivo manufacture of neutrophils from hematopoietic progenitor cells (HPC). CD34+ HPC isolated from umbilical cord blood (UCB) and mobilized peripheral blood (mPB) were expanded in serum‐free medium supplemented with stem cell factor, granulocyte colony stimulating factor, and a thrombopoietin peptide mimetic. After 15 days of cultivation a 5,800‐fold expansion in cell number was achieved for UCB, and up to 4,000‐fold for mPB, comprising 40% and 60% mature neutrophils respectively. Ex vivo expanded neutrophils exhibited respiratory burst activity similar to that for donor neutrophils, and were capable of killing Candida albicans in vitro. These yields correspond to a more than 10‐fold improvement over current methods, and are sufficient for the production of multiple neutrophil transfusion doses per HPC donation. To enable clinical scale manufacture, we adapted our protocol for use in a wave‐type bioreactor at a volume of 10 L. This is the first demonstration of a large scale bioprocess suitable for routine manufacture of a mature blood cell product from HPC, and could enable prophylactic neutrophil support for chemotherapy patients. Biotechnol. Bioeng. 2009; 104: 832–840 © 2009 Wiley Periodicals, Inc.

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10 Gb/s SCM system using optical single side-band modulation

Cited by 13 publications

References 4 publications

Design of a compact dual‐band bandpass filter using trisection stepped impedance resonators

Design of a compact dual‐band bandpass filter using trisection stepped impedance resonators

Optical single-sideband modulation based on silicon-on-insulator coupled-resonator optical waveguides

A 40‐Gb/s SCM optical communication system based on an integrated CMOS transceiver

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