发明授权
- 专利标题： Optical transmission device, optical transmission/reception device, control method, and control program having heating and cooling control functions of a temperature control element
- 专利标题（中）： 光传输装置，光传输/接收装置，控制方法和具有温度控制元件的加热和冷却控制功能的控制程序
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申请号： US13368543申请日： 2012-02-08
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公开(公告)号： US08735802B2公开(公告)日： 2014-05-27
- 发明人: Kohei Iwanaga
- 申请人： Kohei Iwanaga
- 申请人地址： JP Tokyo
- 专利权人： NEC Corporation
- 当前专利权人： NEC Corporation
- 当前专利权人地址： JP Tokyo
- 代理机构： Sughrue Mion, PLLC
- 优先权： JP2011-030229 20110215
- 主分类号： H01J40/14
- IPC分类号： H01J40/14
摘要：
For an optical transmitter in which an EA modulator modulates a laser beam emitted from an LD, a control circuit stops heating/cooling of the EA modulator when a casing temperature (TC) is within a range of a low-temperature side reference temperature (T_cool) and a high-temperature side reference temperature (T_heat), sets a bias voltage for the EA modulator to a bias voltage corresponding to the modulator temperature based on table information recorded on a memory circuit, heats the EA modulator and sets the bias voltage corresponding to the low-temperature side reference temperature when the casing temperature is equal to or lower than the low-temperature side reference temperature, and cools the EA modulator and sets the bias voltage corresponding to the high-temperature side reference temperature when the casing temperature is equal to or higher than the high-temperature side reference temperature.
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