Abstract:The sampled grating tunable twin-guide (SG-TTG) laser diode is a DFB-like tunable laser that employs Vernier-effect tuning to achieve wide wavelength tuning. In contrast to most other monolithic widely tunable lasers (which are usually DBR-type lasers), a phase tuning section is not needed and, hence, the SG-TTG laser requires at least one tuning current less than comparable devices. The devices provide full wavelength coverage over a 40 nm-broad tuning range that is centered at 1.54 µm. Its tuning behavior is… Show more
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