Half-Wave-Coupled Ring-FP Laser With 50-Channel 100-GHz-Spaced Wavelength Tuning

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Abstract

We report our latest experimental results of the half-wave-coupled rectangular ring-FP laser. All the waveguides of the device are active, and the thermooptic effect is employed to extend the tuning range beyond the free-spectral-range limit. Single-electrode tuning of 20 channels with 100-GHz spacing is obtained. By combining five single-electrode-controlled tuning curves with different bias currents on fixed electrodes and with the thermoelectric cooler fixed at 20 °C, wavelength tuning of 50 channels with 100-GHz spacing covering the L-band is achieved with a side-mode suppression ratio up to 41 dB. Direct modulation at 2.5 Gb/s is also demonstrated. The simple and compact ring-FP laser has great potential as a low-cost tunable laser for many applications.

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Wu, L., Hu, Z., Liao, X., & He, J. J. (2014). Half-Wave-Coupled Ring-FP Laser With 50-Channel 100-GHz-Spaced Wavelength Tuning. IEEE Photonics Journal, 6(4). https://doi.org/10.1109/JPHOT.2014.2345876

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