研究目的
Investigating the performance of a widely tunable V-cavity laser monolithically integrated with an electro-absorption modulator for DWDM metropolitan and access networks.
研究成果
The study demonstrates an InP-based electro-absorption modulated widely tunable V-cavity laser with a wide tuning range of 41 nm and SMSR more than 47 dB across the entire range. The device shows potential for low-cost metro and access DWDM networks due to its simple fabrication and high compactness.
研究不足
The study is limited by the positive chirp of the modulator leading to non-negligible power penalty and the need for further integration of a power booster amplifier for extended transmission distances.
1：Experimental Design and Method Selection:
The study involves the design and fabrication of an electro-absorption modulated V-Cavity Laser (EMVCL) with a focus on its tunability and integration with an EAM.
2：Sample Selection and Data Sources:
The device is fabricated using an identical active layer stack of InGaAlAs-MQW structure for both the VCL and EAM sections.
3：List of Experimental Equipment and Materials:
Includes a Vector Network Analyzer (Anritsu 37369D), a commercial
4：7GHz high-sensitivity avalanche photodiode (APD), and a signal quality analyzer (Model MP1800-A from Anritsu). Experimental Procedures and Operational Workflow:
The process involves measuring the static and dynamic characteristics of the EMVCL, including wavelength tunability, SMSR, and BER for different propagation distances.
5：Data Analysis Methods:
The analysis includes evaluating the device's performance in terms of wavelength tunability, SMSR, and transmission capabilities over standard single-mode fiber.
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