Tunable optical fiber grating using a memory alloy actuator

Chi Feng Chen, Rui Ting Zheng

Research output: Contribution to journalConference articlepeer-review


The feasibility of a tunable optical fiber grating with a quasi-active and low cost actuator device fabricated by shape memory alloy is investigated. The driving force and displacement of the shape memory alloy actuator are measured. It is found that the SMA actuator with 0.3 mm diameter and 2 mm length driven by 7 V voltage after 5 sec can change the length of the fiber about 60μm, here the strain is about 3%. For the optical communication in the wavelength 1550nm regime, the tunable spectrum width is about 50nm. Therefore, the actuator can use to drive optical fiber grating, it will lead to change the fiber Bragg grating resonance wavelength. This device perhaps plays the key role of tunable optical filter or OADM.

Original languageEnglish
Article number60193J
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume6019 II
StatePublished - 2005
EventPassive Components and Fiber-based Devices II - Shanghai, China
Duration: 7 Nov 200510 Nov 2005


  • Actuator
  • Fiber bragg grating
  • Fixed OADM
  • Memory alloy actuator
  • OADM
  • Optical communication
  • Optical fiber grating
  • Shape memory alloy
  • Shape memory alloy actuator
  • Tunable optical fiber grating


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