Wavelength-locking of a semiconductor laser using an electronic technique

Simple item page
dc.contributor.authorMullaney, Kevin
dc.contributor.authorHodgkinson, Jane
dc.contributor.authorStaines, Stephen
dc.contributor.authorTatam, Ralph P.
dc.date.accessioned2020-02-05T16:43:20Z
dc.date.available2020-02-05T16:43:20Z
dc.date.issued2019-03-04
dc.description.abstractThis work describes a novel system to control the stability of a 1583 nm telecommunications laser diode via measurement of junction voltage. This electronic technique dispenses with the optical components used in conventional wavelength locking schemes and shifts wavelength control to system level electronic instrumentation. The approach employs real-time measurement of diode series resistance (Rs), which is used to compensate the measured forward voltage (Vf) and recover the junction voltage (Vj) of the laser. Control of Vj provides wavelength control without introducing a significant error when the package temperature varies. This was implemented by measuring Rs as the dynamic resistance, δV/δI, by modulating the injection current. Recent work has reduced the modulation amplitude and noise in the electronics. Using a frequency deviation of 1 GHz, we achieved a centre wavelength variation of ± 2 pm over a package temperature variation of 20-55 °C. This gives a wavelength/ temperature coefficient of 0.03 pm/ °C, which is an improvement on 0.34 pm/ °C, as typically achieved for optical locking systems. The system has been further developed using board-level components within a compact demonstrator unit. Work is on-going to further enhance this performance over a package temperature variation of 0-70 °C.en_UK
dc.identifier.citationMullaney K, Hodgkinson J, Staines SE, Tatam RPO. (2019) Wavelength-locking of a semiconductor laser using an electronic technique. In: SPIE OPTO: The Optoelectronics, Photonic Materials and Devices Conference, 2019, San Francisco, CA, USA, 2-7 February 2019, Proceedings Volume 10925, Photonic Instrumentation Engineering VIen_UK
dc.identifier.issn0277-786X
dc.identifier.urihttps://doi.org/10.1117/12.2507260
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/15097
dc.language.isoenen_UK
dc.publisherSPIEen_UK
dc.rightsAttribution-NonCommercial 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/*
dc.subjectDFB laseren_UK
dc.subjectwavelength lockingen_UK
dc.subjecttelecommunicationsen_UK
dc.subjectLEDen_UK
dc.subjectfrequencyen_UK
dc.subjectelectronicen_UK
dc.titleWavelength-locking of a semiconductor laser using an electronic techniqueen_UK
dc.typeConference paperen_UK

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Wavelength-locking_of_a_semiconductor_laser-2019.pdf
Size:
3.44 MB
Format:
Adobe Portable Document Format
Description:
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.63 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

Staff publications (SATM)