All-Fiber Nanosecond Gating for Time-Resolved Spectral Analysis
2016 (English)In: IEEE Photonics Technology Letters, ISSN 1041-1135, E-ISSN 1941-0174, Vol. 28, no 8, 829-832 p.Article in journal (Refereed) PublishedText
We demonstrate the addition of time gating to a standard optical spectrum analyzer (OSA) operating in the spectral region similar to 1.06 mu m. This is accomplished by opening for 7 ns the optical input to the OSA with an electrically driven poled fiber in a Sagnac loop. The sequential interrogation with nanosecond resolution of the reflection from three fiber Bragg gratings along a piece of fiber allows distinguishing the spectral peaks created with a minimum separation of 85 cm. The passive extinction ratio of this device is >40 dB and returns to >40 dB from >23 dB on a 35-ns time scale directly after time gating.
Place, publisher, year, edition, pages
2016. Vol. 28, no 8, 829-832 p.
Electrooptic modulation, spectral analysis, optical fiber devices
Other Physics Topics
IdentifiersURN: urn:nbn:se:kth:diva-185339DOI: 10.1109/LPT.2015.2513739ISI: 000372637700002ScopusID: 2-s2.0-84963593144OAI: oai:DiVA.org:kth-185339DiVA: diva2:921744
FunderSwedish Research CouncilKnut and Alice Wallenberg FoundationEU, FP7, Seventh Framework Programme, FP7-288786Carl Tryggers foundation
QC 201604212016-04-212016-04-182016-04-21Bibliographically approved