The design,fabrication and performance of 1.3μm superluminescent diodes are reported.A InP window structure and a passive absorber waveguide in different plane are applied to suppress lasing oscillation.A buried cres...The design,fabrication and performance of 1.3μm superluminescent diodes are reported.A InP window structure and a passive absorber waveguide in different plane are applied to suppress lasing oscillation.A buried crescent structure similar to a laser diode is introduced to achieve high output power.The output power of about 70O μW is coupled into a single-mode fiber at 150 mA and 25℃.Spectrum width is more than 30 nm.The devices operate in superluminescent state in the range from 0℃ to 60℃.展开更多
We present an innovative and practical scheme of building a miniaturized wavemeter, with the advantages of low cost, high reliability and simple structure. Through a calibration test by a 780 nm external cavity diode ...We present an innovative and practical scheme of building a miniaturized wavemeter, with the advantages of low cost, high reliability and simple structure. Through a calibration test by a 780 nm external cavity diode laser(ECDL), the results show that our system gets a wavelength resolution of better than 1 pm, measurement accuracy of better than 2 pm(corresponding to a frequency of 1 GHz), and a measurement range of 8.5 nm. Finally, the multi-mode comparison test between our system and a commercial spectrum analyzer further indicates the high-precision, miniaturization and low cost of the proposed system, which shows that it is particularly suitable for ECDL and atom cooling and trapping experiments. The system design, experimental results and conclusions are of definite significance as a fine reference for other ranges of wavelength.展开更多
文摘The design,fabrication and performance of 1.3μm superluminescent diodes are reported.A InP window structure and a passive absorber waveguide in different plane are applied to suppress lasing oscillation.A buried crescent structure similar to a laser diode is introduced to achieve high output power.The output power of about 70O μW is coupled into a single-mode fiber at 150 mA and 25℃.Spectrum width is more than 30 nm.The devices operate in superluminescent state in the range from 0℃ to 60℃.
基金supported by the National Natural Science Foundation of China(No.51275523)the Specialized Research Fund for the Doctoral Program of Higher Education of China(No.20134307110009)+1 种基金the Graduate Innovative Research Fund of Hunan Province(No.CX20158015)the Excellent Graduate Innovative Fund of NUDT(No.B150305)
文摘We present an innovative and practical scheme of building a miniaturized wavemeter, with the advantages of low cost, high reliability and simple structure. Through a calibration test by a 780 nm external cavity diode laser(ECDL), the results show that our system gets a wavelength resolution of better than 1 pm, measurement accuracy of better than 2 pm(corresponding to a frequency of 1 GHz), and a measurement range of 8.5 nm. Finally, the multi-mode comparison test between our system and a commercial spectrum analyzer further indicates the high-precision, miniaturization and low cost of the proposed system, which shows that it is particularly suitable for ECDL and atom cooling and trapping experiments. The system design, experimental results and conclusions are of definite significance as a fine reference for other ranges of wavelength.
