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首页> 外文会议>Passive Components and Fiber-based Devices III pt.1 >SOA Based Multiwavelength Fiber Ring Laser with Tunability of both Channel Spacing and Wavelength
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SOA Based Multiwavelength Fiber Ring Laser with Tunability of both Channel Spacing and Wavelength

机译：具有通道间隔和波长可调谐性的基于SOA的多波长光纤环形激光器

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摘要

To enhance the functionality and flexibility of a multiwavelength fiber laser, characteristics such as the tunability of the lasing wavelength, the wavelength spacing and the number of channels should be investigated simultaneously. We have demonstrated a channel spacing and wavelength tunable multiwavelength fiber ring laser based on semiconductor optical amplifier and a novel tunable polarization-diversity loop configuration (PDLC)-based comb filter. The tunable PDLC-based comb filter would be composed of a polarization beam splitter and three wave plates (one quarter wave plate and two half wave plates) and a polarization differential delay line (DDL). Channel spacing can be controlled continuously by using a motorized polarization differential delay line. And wavelength can be simultaneously changed by controlling wave plates. The PDLC-based comb filter has the advantages of the input polarization independence and simple tunability. By employing the comb filter in the laser system, multiwavelength operation of up to 25 laser lines with the signal-to-noise ratio over 25 dB and 0.8 nm wavelength spacing has been demonstrated at room temperature. Also, we could achieve the increased output channel power of the laser while reducing the number of channels. The results show that the multiwavelength operation is even and stable. And we could achieve the output spectra of tuned wavebands with channel spacing of 1.6 nm and 0.4 nm when the semiconductor optical amplifier is driven with the injection current of 160 mA while adjusting a half-wave plate at each tuning set. As a result, the shift of lasing wavelength and wavelength spacing were continuously controllable in this system.
机译：为了增强多波长光纤激光器的功能和灵活性，应同时研究诸如激光波长的可调性，波长间隔和通道数之类的特性。我们已经展示了基于半导体光放大器和新型可调谐偏振分集环路配置（PDLC）的梳状滤波器的通道间隔和波长可调多波长光纤环形激光器。基于可调PDLC的梳状滤波器将由偏振分束器和三个波片（一个四分之一波片和两个半波片）和一个偏振微分延迟线（DDL）组成。通过使用电动极化差分延迟线可以连续控制通道间隔。通过控制波片可以同时改变波长。基于PDLC的梳状滤波器具有输入偏振独立性和简单可调性的优点。通过在激光系统中使用梳状滤波器，已在室温下证明了多达25条激光线的多波长操作，其信噪比超过25 dB，波长间隔为0.8 nm。同样，我们可以在减少通道数量的同时，提高激光器的输出通道功率。结果表明，多波长操作是均匀稳定的。当以160 mA的注入电流驱动半导体光放大器并在每个调谐位置调整一个半波片时，我们可以获得通道间隔为1.6 nm和0.4 nm的调谐波段的输出光谱。结果，在该系统中激光波长和波长间隔的移动是连续可控的。

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