Microring-based modulation and demodulation of DPSK signal

Department of Information Science and Electronic Engineering, Zhejiang University, Hang-hsien, Zhejiang Sheng, China
Optics Express (Impact Factor: 3.49). 10/2007; 15(18):11564-9. DOI: 10.1364/OE.15.011564
Source: PubMed


Ultra-small modulator and demodulator for 10 Gb/s differential phase-shift-keying (DPSK), using silicon-based microrings, are proposed. A single-waveguide microring modulator with over-coupling between ring and waveguide generates a DPSK signal, while a double-waveguide microring filter enables balanced DPSK detection. These modulator and demodulator are characterized. A trade-off between pattern dependence of the Duobinary signal and alternate-mark inversion signal power in demodulator design is discussed. Power penalty of the proposed approach is 0.8 dB relative to baseline using conventional modulation and demodulation techniques.

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    • "In addition, there are several advantages of microring generated BPSK, such as resilience to chromatic dispersion and lower driving voltage [8]. A theoretical simulation shows only 0.8 dB power penalty between all-ring based BPSK and conventional BPSK link [10]. Therefore, we expect the receiver sensitivity to be improved using optical packaging of silicon chips with reduced coupling loss [16] and optimized device designs. "
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    ABSTRACT: We design and demonstrate for the first time an end-to-end binary phase-shift keying (BPSK) link based on silicon microring resonators, with an operational bit-rate at 10 Gb/s. The obtained bit-error-rate is below the forward error correction limit, validating the practical application of the demonstrated technique. Performance comparisons to conventional BPSK modulation and demodulation techniques are also made. The microring-based BPSK link promises a compact, energy efficient, and low-cost interconnect solution for high-capacity transceivers.
    IEEE Photonics Technology Letters 09/2014; 26(18):1805-1808. DOI:10.1109/LPT.2014.2336091 · 2.11 Impact Factor
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    • "The BPSK signal was then demodulated by the microring through port by generating the AMI signal (Fig. 4d). Note for 10-Gb/s BPSK demodulation, the optimal Q for maximal eye-opening is ~22,000 [7], close to the microring we used. We also tried microrings with Q of ~5,000, however no successful BPSK demodulation was achieved. "
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    ABSTRACT: We demonstrate the first binary-phase-shift-keying (BPSK) link based on silicon microring resonators, with an operational bit-rate at 10 Gb/s. Bit-error-rate measurements and eye diagrams are used to compare the link’s performance with conventional BPSK modulation and demodulation techniques.
    Optical Fiber Communication Conference; 03/2014
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    • "The PSR is based on a tapered waveguide-based TM 0 -TE 1 mode converter followed by a 2×2 multimode interferometer (MMI) [4], as shown in Fig. 1(a). An MRR with two identical coupling regions is introduced right after the PSR in order to demodulate the DPSK signal [5] [6]. In the PSR, the two arms, which connect the TM 0 -TE 1 mode converter and the 2×2 MMI, introduce a π/2 phase difference. "
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    ABSTRACT: Simultaneous polarization demultiplexing and demodulation of PolMux-DPSK signals is demonstrated using a polarization splitter and rotator together with a single microring resonator on a silicon chip. System experimental results validate the concept.
    IEEE Photonics Conference, Bellevue, Washington, USA; 09/2013
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