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    • 18. 发明授权
    • Laser transmitter device
    • 激光发射装置
    • US07139450B2
    • 2006-11-21
    • US10436953
    • 2003-05-13
    • Tattee KhayimMasaki TohyamaTomoaki YamaguchiHirokazu Nishimura
    • Tattee KhayimMasaki TohyamaTomoaki YamaguchiHirokazu Nishimura
    • G02B6/28
    • G02B6/4215G02B6/29358G02B6/4244G02B6/4245G02B6/4246G02B6/4271G02B6/4286H01S5/02248H01S5/02284H01S5/042H01S5/06837H01S5/0687H04B10/506H04B10/572H04J14/02
    • A laser transmitter device includes a laser light source, first and second optical elements, and first and second detection elements. The first optical element has a first optical characteristic with wavelength dependency, whose light transmissivity or reflectivity shows a monotone increase or decrease within a wavelength range over channels. The second optical element has a second optical characteristic with wavelength dependency, whose transmissivity or reflectivity changes in a cycle corresponding to intervals of the channels or two times the intervals. The first detection element detects an intensity of light emitted from the laser light source and coming via the first optical element, and generates a first electric signal reflecting the first optical characteristic. The second detection element detects an intensity of light emitted from the laser light source and coming via the second optical element, and generates a second electric signal reflecting the second optical characteristic.
    • 激光发射装置包括激光光源,第一和第二光学元件以及第一和第二检测元件。 第一光学元件具有波长依赖性的第一光学特性,其透光率或反射率在通道上在波长范围内显示单调增加或减少。 第二光学元件具有波长依赖性的第二光学特性,其透射率或反射率在对应于通道的间隔或间隔的两倍的周期中变化。 第一检测元件检测从激光光源发射并经由第一光学元件发出的光的强度,并产生反映第一光学特性的第一电信号。 第二检测元件检测从激光源发射并经由第二光学元件射出的光的强度,并产生反映第二光学特性的第二电信号。
    • 20. 发明授权
    • Optical transmission apparatus
    • 光传输装置
    • US5642371A
    • 1997-06-24
    • US208704
    • 1994-03-11
    • Masaki TohyamaNobuo Suzuki
    • Masaki TohyamaNobuo Suzuki
    • H01S5/0625H01S5/0687H01S5/323H01S5/343H01S3/18
    • B82Y20/00H01S5/06258H01S5/0687H01S5/32391H01S5/34306H01S5/3434
    • An optical transmission apparatus characterized by comprising a transmission system for transmitting an optical frequency-division multiplex signal, and an optical reception system which contains a semiconductor laser as a light source for reception and receives the optical signal, wherein the semiconductor laser contains first oscillation wavelength control device for controlling its oscillation wavelength according to temperature and second oscillation wavelength control device for controlling its oscillation wavelength according to carrier density, causes the first oscillation wavelength control device to scan oscillation wavelengths over a range from a first frequency to a second wavelength and simultaneously, causes the second oscillation wavelength control device to change the oscillation frequency, and selects wavelengths in the range from the first wavelength to the second wavelength stepwise sequentially.
    • 一种光传输装置,其特征在于包括用于发送光分频多路复用信号的传输系统和包含半导体激光器作为用于接收的光源并接收光信号的光接收系统,其中半导体激光器包含第一振荡波长 用于根据温度控制其振荡波长的控制装置和用于根据载流子密度控制其振荡波长的第二振荡波长控制装置使第一振荡波长控制装置在从第一频率到第二波长的范围内扫描振荡波长,同时 使第二振荡波长控制装置改变振荡频率,并且逐步依次选择从第一波长到第二波长的范围内的波长。