Ultrafast optical logic gate using a semiconductor laser amplifier operating at transparency in a loop mirror

Kao, Y.-H.; Goltser, I. V.; Islam, M. N.; Raybon, G.

doi:10.1109/cleo.1997.602293

Cited by 3 publications

(3 citation statements)

References 3 publications

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“…This shows the significant potential of the transparent TOAD to be used in ultrahigh speed processing, being hundreds of Gbit/s. This coincides with the experimental results [9] . The power and phase of the CW and CCW signals after propagating through the SOA is shown in Fig.…”

Section: Transparent Toadsupporting

confidence: 93%

“…Several strategies have been performed to quicken the recovery [6][7][8][9] . Among them, as an SOA is biased at transparency, the gain recovery time is determined by the intraband effect such as carrier heating (CH), spectral hole burning (SHB), ultrafast nonlinear refraction (UNR) and two-photon absorption (TPA) and has the value of only a few picoseconds.…”

Section: Introductionmentioning

confidence: 99%

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20Gbit/s all-optical logic OR in terahertz optical asymmetric demultiplexer (TOAD)

Yan

Lin

2005

SPIE Proceedings

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A scheme for all-optical logic OR based on transparent teraherz optical asymmetric demultiplexer (transparent-TOAD) is proposed in this paper. In the transparent-TOAD, the SOA is biased at transparency and the gain recovery time determined by the intraband effect has the value of only a few picoseconds. Numerical analysis shows that the switching window of the transparent-TOAD is only about 0.54ps and the potential for ultrahigh speed all-optical logic processing is shown. Numerical demonstration is performed for 4-bit and 16-bit logic OR at 20Gbit/s. The results coincide with the OR truth table, showing high extinction ratio and no pattern dependency. Detailed analysis is carried out on the performance of the logic OR scheme.

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Section: Transparent Toadsupporting

confidence: 93%

Section: Introductionmentioning

confidence: 99%

20Gbit/s all-optical logic OR in terahertz optical asymmetric demultiplexer (TOAD)

Yan

Lin

2005

SPIE Proceedings

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“…the output signal is (6) where A is the slowly varying envelope of field, subscript sgl can be cw and ccw, noise can be cw_noise and ccw_noise. η 0 ΐτ_ 58 ι is the coupling coefficient, which describes the nonlinear interaction between control pulse and signal pulse.…”

Section: Theoretical Modelmentioning

confidence: 99%

Analysis of Performance of TOAD Under the Conditions of Timing Jitter and ASE Noise

Wen¹,

Wu²,

Jin-tong³

2003

Journal of Optical Communications

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We present a new treatment to calculate the BER of terahertz optical asymmetric demultiplexer (TOAD) by conbining the model of SOA and receiver. Results show that power penalty for jitter is small but that for ASE is comparatively large.Then the signal pulse comes out from port B. By change the offset Δχ from the midpoint of the loop, the different switching window is obtained.The detail of the theoretical model of TOAD by taking into account intraband effects and Amplified Spontaneous Emission (ASE) are printed in reference [3,5], the summary lines are described as following.

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Analysis of the characteristics of TOADs subject to frequency-detuned control and signal picosecond pulses

Tang

Shore²

1999

IEEE J. Quantum Electron.

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Ultrafast optical logic gate using a semiconductor laser amplifier operating at transparency in a loop mirror

Cited by 3 publications

References 3 publications

20Gbit/s all-optical logic OR in terahertz optical asymmetric demultiplexer (TOAD)

20Gbit/s all-optical logic OR in terahertz optical asymmetric demultiplexer (TOAD)

Analysis of Performance of TOAD Under the Conditions of Timing Jitter and ASE Noise

Analysis of the characteristics of TOADs subject to frequency-detuned control and signal picosecond pulses

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