| 摘要 |
<p>A chiral fiber sensor (10) implemented in a chiral fiber (12) is provided that mimics advantageous optical properties of a cholesteric liquid crystal structure. In a passive sensor embodiment (10), the chiral fiber sensor of the present invention includes a chiral fiber element (12) configured to shift its reflection band in response to a change in a particular external condition (such as temperature, pressure and axial twist). The chiral fiber element (12) is subjected to a broadband emission (20) while monitoring its reflection or the transmission spectrum. Changes in the monitored spectrum indicate changes in the particular external condition. In an active sensor embodiment (100), the chiral fiber element (102) is configured as an optically pumped chiral laser (108) having a lasing wavelength that shifts in reponse to a change in a particular external condition (such as temperature, pressure and axial twist).</p> |
