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Self-Pulsating Amplified Feedback Laser Based on a Loss-Coupled DFB Laser

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5 Author(s)
Dae-Su Yee ; Korea Res. Inst. of Stand. & Sci., Daejeon ; Young Ahn Leem ; Sang-Taek Kim ; Kyung Hyun Park
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Monolithic self-pulsating semiconductor lasers called amplified feedback lasers (AFLs) can generate high-frequency self-pulsations according to the concept of a single-mode laser with shortly delayed optical feedback, which consist of a distributed-feedback (DFB) laser, a phase control, and an amplifier section. Since mode degeneracy of the DFB section, which should operate as a single-mode laser, affects the self-pulsation, single-mode characteristics of the DFB section are critical for the self-pulsation. The effect of a complex coupling in the DFB section on the self-pulsation is numerically analyzed to reveal that the complex coupling provides a wide operation range for the self-pulsation. Also, self-pulsating AFLs based on a loss-coupled DFB laser are experimentally demonstrated to verify the self-pulsation characteristics and the capability for all-optical clock recovery.

Published in:

Quantum Electronics, IEEE Journal of  (Volume:43 ,  Issue: 11 )

Date of Publication:

Nov. 2007

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