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Flexibly tunable dual-mode semiconductor laser based on amplified feedback
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Flexibly tunable dual-mode semiconductor laser based on amplified feedback
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Journal Article
Flexibly tunable dual-mode semiconductor laser based on amplified feedback
2025
Overview
We propose and fabricate a monolithically integrated dual-mode semiconductor laser (DML) based on optical amplified feedback, where the adjustable optical self-injection feedback could induce dual-wavelength lasing, and the sub-millimeter total cavity length provides access to be microwave source. When keeping the injection current of semiconductor optical amplifier (SOA) be constant, inject different current for the segment of distributed feedback laser (DFB), we have achieved tunable microwave signal with different ranges of 10 GHz and 18 GHz respectively, which significantly simplifies the system configuration and reduces the footprint, power consumption and cost. Besides, through a special current injection scheme for the two-segment semiconductor laser, whole wavelength tuning with fixed wavelength spacing can also be realized. It provides a convenient and low-cost photonic solution for flexible and tunable microwave sources.
Publisher
Springer Berlin Heidelberg,Springer Nature B.V
Subject
