研究目的
Demonstrating error-free 100-Gb/s optical packet switching with low power consumption using a combination of a label processor and 8 × 8 broadcast-and-select optical switch.
研究成果
Error-free operation for 100-Gb/s burst optical packets was demonstrated with a significant reduction in power consumption. The total power consumption of the 8 × 8 optical packet switch is estimated to be as low as 27.3 W (3.4 W/100-Gb/s port).
研究不足
The scalability of the B&S switch's port count is limited due to power-splitting intrinsic loss. The switch requires an EDFA for loss compensation at each output port.
1：Experimental Design and Method Selection:
The experiment involves the use of a label processor and an 8 × 8 broadcast-and-select optical switch for optical packet switching. The label processor includes an optical-trigger-pulse generator and an optoelectronic serial-to-parallel converter. The optical switch is based on electro-absorption-modulators with enhancements to reduce electrical crosstalk and improve fabrication ease.
2：Sample Selection and Data Sources:
The experiment uses 100-Gb/s input optical packets generated by four 25-Gb/s tunable transmitters, with various packet lengths and guard bands.
3：List of Experimental Equipment and Materials:
The setup includes a label processor, an 8 × 8 B&S optical switch, tunable transmitters, a WDM coupler, a burst-mode EDFA, and a 25-Gb/s burst-mode avalanche photodiode and trans-impedance amplifier.
4：Experimental Procedures and Operational Workflow:
The packets are generated, multiplexed, fed into the optical switch, selectively switched to output ports, amplified, and detected for error measurement.
5：Data Analysis Methods:
Error measurements are conducted to verify error-free operation, and power consumption is estimated.
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optical-trigger-pulse generator
Generates optical triggers for the label processor.
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optoelectronic serial-to-parallel converter
OCTA
Interfaces fast label bits to a slow CMOS processor.
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electro-absorption-modulator-based B&S optical switch
8 × 8
Switches optical packets based on control signals.
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tunable transmitter
Generates 25-Gb/s optical packets.
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WDM coupler
Multiplexes outputs from tunable transmitters.
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burst-mode EDFA
Amplifies output packets.
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25-Gb/s burst-mode avalanche photodiode and trans-impedance amplifier
Detects output packets.
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