University of Surrey

Test tubes in the lab Research in the ATI Dance Research

Novel multi-wavelength semiconductor lasers.

Poguntke, Kai R. (1994) Novel multi-wavelength semiconductor lasers. Doctoral thesis, University of Surrey (United Kingdom)..

Full text is not currently available. Please contact sriopenaccess@surrey.ac.uk, should you require it.

Abstract

The technique of wavelength division multiplexing (WDM) is currently attracting considerable interest from the telecommunications and computer industries alike as a means both for increasing the transmission rates of existing fiber-optic links and for attaining enhanced flexibility in future optical networks. Studies of WDM systems have indicated the need for a single-output multi-wavelength laser source whose wavelengths can be controlled to within a small fraction of the inter-channel spacing. Furthermore, a monolithically integrated laser source realized by simple processing techniques would, due to robustness and reduced packaging costs, make WDM a more economically viable option.This thesis describes the design, fabrication and characteristics of a new type of monolithically integrated semiconductor laser, the multi-stripe array grating integrated cavity (MAGIC) laser, that gives simultaneous multiple wavelength laser emission from a single output port. Each emission wavelength may be independently selected from a comb of "allowed" operating wavelengths that are precisely set at the fabrication stage. The laser is best suited to wavelength spacings >1nm and may be fabricated in different materials systems for operation in different wavelength ranges. This thesis is primarily concerned with fabrication in the InGaAsP/lnP materials system for operation in the 1.5mum communication band.A prototype version of the MAGIC laser has been fabricated; it emits 15 different wavelengths spaced at ~2nm intervals over a ~30nm range around 1.5mum. The spacing is constant to within 0.03nm, the highest as-fabricated wavelength linearity so far recorded for a monolithic multi-wavelength laser source. Absolute wavelength accuracy is ~2nm; exact coincidence with design values may be obtained by temperature tuning the laser mount (0.11nm/°C sensitivity).

Item Type: Thesis (Doctoral)
Divisions : Theses
Authors :
NameEmailORCID
Poguntke, Kai R.UNSPECIFIEDUNSPECIFIED
Date : 1994
Contributors :
ContributionNameEmailORCID
http://www.loc.gov/loc.terms/relators/THSUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Depositing User : EPrints Services
Date Deposited : 09 Nov 2017 12:10
Last Modified : 09 Nov 2017 14:37
URI: http://epubs.surrey.ac.uk/id/eprint/842665

Actions (login required)

View Item View Item

Downloads

Downloads per month over past year


Information about this web site

© The University of Surrey, Guildford, Surrey, GU2 7XH, United Kingdom.
+44 (0)1483 300800