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Two-mode QD laser system. The reflected-type grating 1 is oriented to give feedback corresponding to at the GS of the QD laser. The SWM and LWM are separated by the reflected-type grating 2. The inset shows the spectrum of the dual-wavelength operation at 1194 and .
(Color online) (a) curves of the LWM at under dual-wavelength operation. (b) curves of the SWM at under dual-wavelength operation.
Variation of lasing power with temperature: curve A for lasing mode at under dual-wavelength operation at , curve B for lasing mode at under dual-wavelength operation at , and curve C for lasing mode at under single-wavelength operation at .
Power of the SWM vs the power of the LWM at 38, 40, 42, and . When temperature increases from , these curves trace from the right hand side to the left hand side.
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