In this paper, we observe experimentally the optical bistability induced by the side-mode injection power and wave- length detuning in a single mode Fabry-P6rot laser diode （SMFP-LD）. Results show that the bistabili...In this paper, we observe experimentally the optical bistability induced by the side-mode injection power and wave- length detuning in a single mode Fabry-P6rot laser diode （SMFP-LD）. Results show that the bistability characteristics of the dominant and injected modes are strongly dependent on the injected input optical power and wavelength detuning in an SMFP-LD. We observe three types of hysteresis loops： counterclockwise, clockwise, and butterfly hysteresis with various loop widths. In the case of a bistability loop caused by injection power, the transition from counterclockwise to clockwise in the hysteresis direction with the wavelength detuning from 0.028 nm to 0.112 nm is observed in a way of butterfly hys- teresis for the dominant mode by increasing the wavelength detuning. The width of hysteresis loop, induced by wavelength detuning is also changed while the injection power is enhanced from -7 dBm to -5 dBm.展开更多
An optical device,consisting of a multi-mode Fabry–Pérot laser diode(MMFP-LD)with two-stage optical feedback,is proposed and experimentally demonstrated.The results show that the single-mode output with side-mod...An optical device,consisting of a multi-mode Fabry–Pérot laser diode(MMFP-LD)with two-stage optical feedback,is proposed and experimentally demonstrated.The results show that the single-mode output with side-mode suppression ratio(SMSR)of~21.7 dB is attained by using the first-stage feedback.By using the second-stage feedback,the SMSR of single-mode operation could be increased to~28.5 dB while injection feedback power of-29 dBm is introduced into the laser diode.In the case of up to-29 dBm feedback power,the outcome SMSR is rapidly decayed to a very low level so that an obvious multi-mode operation in the output spectrum could be achieved at the feedback power level of-15.5 dBm.Thus,a transition between single-and multi-mode operations could be flexibly controlled by adjusting the injected power in the second-stage feedback system.Additionally,in the case of injection locking,the outcome SMSR and output power at the locked wavelength are as high as~50 dB and~5.8 dBm,respectively.展开更多
基金supported by the National Natural Science Foundation of China(Grant No.61205111)the Open Foundation of State Key Laboratory of Millimeter Waves,China(Grant No.K201219)the Natural Science Foundation of Chongqing Normal University,China(Grant No.2011XLZ06)
文摘In this paper, we observe experimentally the optical bistability induced by the side-mode injection power and wave- length detuning in a single mode Fabry-P6rot laser diode （SMFP-LD）. Results show that the bistability characteristics of the dominant and injected modes are strongly dependent on the injected input optical power and wavelength detuning in an SMFP-LD. We observe three types of hysteresis loops： counterclockwise, clockwise, and butterfly hysteresis with various loop widths. In the case of a bistability loop caused by injection power, the transition from counterclockwise to clockwise in the hysteresis direction with the wavelength detuning from 0.028 nm to 0.112 nm is observed in a way of butterfly hys- teresis for the dominant mode by increasing the wavelength detuning. The width of hysteresis loop, induced by wavelength detuning is also changed while the injection power is enhanced from -7 dBm to -5 dBm.
基金Supported by the National Natural Science Foundation of China under Grant No 61205111the Open Foundation of State Key Laboratory of Millimeter Waves under Grant No K201219the Natural Science Foundation of Chongqing Normal University under Grant No 2011XLZ06。
文摘An optical device,consisting of a multi-mode Fabry–Pérot laser diode(MMFP-LD)with two-stage optical feedback,is proposed and experimentally demonstrated.The results show that the single-mode output with side-mode suppression ratio(SMSR)of~21.7 dB is attained by using the first-stage feedback.By using the second-stage feedback,the SMSR of single-mode operation could be increased to~28.5 dB while injection feedback power of-29 dBm is introduced into the laser diode.In the case of up to-29 dBm feedback power,the outcome SMSR is rapidly decayed to a very low level so that an obvious multi-mode operation in the output spectrum could be achieved at the feedback power level of-15.5 dBm.Thus,a transition between single-and multi-mode operations could be flexibly controlled by adjusting the injected power in the second-stage feedback system.Additionally,in the case of injection locking,the outcome SMSR and output power at the locked wavelength are as high as~50 dB and~5.8 dBm,respectively.
