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WANG Li-dong, SUN Chang-sen. Constant temperature control of the SLED underlying an adjustable driving-current[J]. LASER TECHNOLOGY, 2009, 33(1): 74-76,86.
Citation: WANG Li-dong, SUN Chang-sen. Constant temperature control of the SLED underlying an adjustable driving-current[J]. LASER TECHNOLOGY, 2009, 33(1): 74-76,86.
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Constant temperature control of the SLED underlying an adjustable driving-current

  • School of Physics and Optoelectronic Engineering, Dalian University of Technology, Dalian 116023, China

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  • Received Date: December 18, 2007
  • Revised Date: March 17, 2008
  • Published Date: February 24, 2009
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    • Abstract
  • A variable constant-current driver was proposed for a super luminescent diode (SLED) to meet the constanttemperature working requirement.This method was carried out by a microcomputer, MSP430, combining with proportional-integraldifferential(PID) algorithm and a semiconductor cooler.Driven by this controller,the SLED generated a stable output power and central wavelength.Experimental results demonstrated that the temperature accuracy of 0.1℃ was achieved when the environmental temperature changed from 10℃ to 40℃.The constant-driving current was stabilized at 0.1mA in the range from 0mA to 200mA.Thus,the driver can meet the demand of SLED application.
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    • References (9)
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