[IEEE Conference Digest 2000 Conference on Lasers and Electro-Optics Europe - Nice, France (10-15...
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Thursday/328 15.15 CThF7 Higa Power Broadband Singlelobe X=l.SS pm Superluminescent Diode Nhta A, Pikhtin, Andrey V. Lyumloy, NatalyaV.F d a o n and llya S. Tsrwv A.F.Ioffe Pbysioo-Technical htitute Runsian Academy of Sciences. 26, Pdyteldulich&p, 194021, St.PetelVbW, RUSS~E Te1(812)247-9379, Fw: (812)247-8038 E-mail: [email protected]&.rssi.ru of mard" cw output power of singlelobe bmacRand supmhnnin-t emissioa. SU) was based on the menasfrpe lasa diode mstruaion fundamental tin" mode con6nement and Bba [I]. To achieve superluminarent ermsuon "wipe law diode w d o n was mndi5ed with the aim of laaing suppression MOCM grown separnte oonfinement multiquantum well InoaAsp/lnGaAsnnp hcterostnrclure was ophized for SLD fabrication. The use of ten strained qua" wels and bmdened wa-de dowed to mini" hal optlcal low @inp up high gain in the Ave rtgion. lnveskgnon oflight-cumnf spectra and faraed paltem ohamcte&h of Wncated SLD with 4 p wipe width pmvidins tough 50% Foupling cfhdency in ain&wde O F with difrerent flied stripe aogle a (from d to 144 i d diffa~lt cavity length L aoow~d to dehmim the ogb" *e of thm p~vrmeters - a = P* aud L=I .2 m. Sii@ 0.1% AR mains was depmired on the front faen of the diode. Such SLD wnstruclion allowed to achieve 60 mW (k1.55 pnt) cw anput power ofsuperhunimwat don. Emission spars Fwt(M iS aa high ss 65 M\ (spdra modulation depth llKl%) Md 60 m (~3%) at o@ug (IiZPd and madmal (P-) oWut powers, rewdvely. The fsr field p m is singlelobe with FWHM BI = fl and 8, = 40'. allowing &cisnt roupling into aiaglmodc optid 0bu. Summing up. we have dwomwted hi& powa low wherena Siobe In(iaAsPLlnP (h-l.SSp) superfumin*xunt diode. SLD us*l maa OOMbuotion with P tilted stripe of 4 pm width and 1200 p length. CW supahmtinesoent output power as high Is 60 mW (X=1.55 p) har been reached. Mm SpeclTa Wdth is 65 MI with spectral modulation of lea then 1%. Singlelobe far-Md panems allow 50 % wupling efikiency into singlemode optical fik. RffeMlOeS I. E.G.Ooljkom e4 al., Tech, Php. Lea., 26(4), 2ooO,( lo be published). 13.30-15.30 Presider: N. Abramson, Royal Institute of TechndogK SWEDEN 13.30 CThG1 CThG - Optical Measurement Technologies: Liquids and Gases IRIS 20 km distributed tempershlrr 8enwr utilising spontaneous BriUouin sealtrring D.J. Webb,V.Lcc~~hc.M.W.Hathaway.C.N. Pannrll,D.A.Jackron Applied Optics Group, School of Physicd Sciences, University of Kent. Canterbury CT2 7NR. UK. e-mail: [email protected], Tel: +44 1227 764 WO. Fax: +44 1227 827 558. Brillouin scattering is seen 8s B potential replacement for thc Raman scattering that ts dxady used ~J I "mercial distributed tempemNrc sensops. Two parameters of the Brillour scatt-og arc temperatwc dependcnt: the Brillouin Frequency shift (which also has s qimiii dependence) and the iiitensiry of Ule spontlncously back-scattered tlrillouin lioc. Several systenis have beco developed for thc mcasumcm of thc Brillouin shift. but rccently attention lhzs focused an the second pwamuler because, if combined wlh hc lirsi. 11 should msblc the determioation of both temperam and strain. Unfortunately. tho fonn of the hack-rcaltcmd bp", coniposed of Bdlauin aod Kayleigh lines rcpamtcd by roughly 10 QHz, cnvkcs both interferometric or heterdpe detection schemes hard to implement. Novenhclcr$ the latter technique show$ good potantial bacawc of its high s~lcclirity ;md dynamic mp. In QEViWS work, we have demonstrated that rhe eumbinatiun ofa CW source and a Brillouim Laser "Id well replace lhe high-speed elrstru-oplics often used Cor the Unlluuin shiR measurement. In the present paper, we desmibe a new arrangement, with I simpler. less- optical-power demanding and Fully controlled Brillwin source, implemantad lo faciliwtr. the heterodyne detectim of the spponlmeou~ Bdlouin back-scatter signal; see Fig. 1. 0-7803-631 9-1/00/$10.0002000 IEEE
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Thursday/328
15.15 CThF7
Higa Power Broadband Singlelobe X=l.SS pm Superluminescent Diode
Nhta A, Pikhtin, Andrey V. Lyumloy, NatalyaV. Fdaon and llya S. T s r w v
A.F.Ioffe Pbysioo-Technical htitute Runsian Academy of Sciences. 26, Pdyteldulich&p, 194021, St.PetelVbW, RUSS~E
Te1(812)247-9379, Fw: (812)247-8038 E-mail: [email protected]&.rssi.ru
of mard" cw output power of singlelobe bmacRand supmhnnin-t emissioa. SU) was based on the menasfrpe lasa diode mstruaion
fundamental tin" mode con6nement and
Bba [I]. To achieve superluminarent ermsuon " w i p e law diode w d o n was mndi5ed with the aim of laaing suppression MOCM grown separnte oonfinement multiquantum well InoaAsp/lnGaAsnnp hcterostnrclure was ophized for SLD fabrication. The use of ten strained q u a " wells and bmdened wa-de dowed to mini" h a l optlcal l o w @inp up high gain in the Ave rtgion.
lnveskgnon oflight-cumnf spectra and faraed paltem ohamcte&h of Wncated SLD
with 4 p wipe width pmvidins tough
50% Foupling cfhdency in ain&wde O F
with difrerent flied stripe aogle a (from d to 144 i d diffa~lt cavity length L aoow~d to dehmim the o g b " *e of thm p~vrmeters - a = P* aud L=I .2 m. S i i @ 0.1% AR mains was depmired on the front faen of the diode. Such SLD wnstruclion allowed to achieve 60 mW (k1 .55 pnt) cw anput power ofsuperhunimwat d o n . Emission spars Fwt(M iS aa high ss 65 M\ (spdra modulation depth llKl%) Md 60 m ( ~ 3 % ) at o@ug ( I i Z P d and madmal (P-) oWut powers, rewdvely. The fsr field p m is singlelobe with FWHM BI = fl and 8, = 40'. allowing &cisnt roupling into aiaglmodc opt id 0bu.
Summing up. we have d w o m w t e d hi& powa low wherena S i o b e In(iaAsPLlnP ( h - l . S S p ) superfumin*xunt diode. SLD us*l maa OOMbuotion with P tilted stripe of 4 pm width and 1200 p length. CW supahmtinesoent output power as high Is 60 mW (X=1.55 p) har been reached. M m SpeclTa W d t h is 65 MI with spectral modulation of lea then 1%. Singlelobe far-Md panems allow 50 % wupling efikiency into singlemode optical fik.
RffeMlOeS I . E.G.Ooljkom e4 al., Tech, Php. Lea., 26(4), 2ooO,( lo be published).
13.30-15.30 Presider: N. Abramson, Royal Institute of TechndogK SWEDEN
13.30 CThG1
CThG - Optical Measurement Technologies: Liquids and Gases IRIS
20 km distributed tempershlrr 8enwr utilising spontaneous BriUouin sealtrring D.J. Webb,V.Lcc~~hc.M.W.Hathaway.C.N. Pannrll,D.A.Jackron
Applied Optics Group, School of Physicd Sciences, University of Kent. Canterbury CT2 7NR. UK.
e-mail: [email protected], Tel: +44 1227 764 WO. Fax: +44 1227 827 558.
Brillouin scattering is seen 8s B potential replacement for thc Raman scattering that ts d x a d y used ~JI "merc ia l distributed tempemNrc sensops. Two parameters o f the Brillour scatt-og arc temperatwc dependcnt: the Brillouin Frequency shift (which also has s qimiii dependence) and the iiitensiry of Ule spontlncously back-scattered tlrillouin lioc. Several systenis have beco developed for thc m c a s u m c m of thc Brillouin shift. but rccently attention lhzs focused an the second pwamuler because, if combined w l h h c lirsi. 11 should msblc the determioation of both temperam and strain. Unfortunately. tho fonn of the hack-rcaltcmd b p " , coniposed of Bdlauin aod Kayleigh lines rcpamtcd by roughly 10 QHz, cnvkcs both interferometric or heterdpe detection schemes hard to implement.
Novenhclcr$ the latter technique show$ good potantial bacawc of its high s~ lcc l i r i ty ;md dynamic mp. In QEViWS work, we have demonstrated that rhe eumbinatiun o f a CW source and a Brillouim Laser "Id well replace lhe high-speed elrstru-oplics often used Cor the Unlluuin shiR measurement. In the present paper, we desmibe a new arrangement, with II simpler. less- optical-power demanding and Fully controlled Brillwin source, implemantad lo faciliwtr. the heterodyne detectim of the spponlmeou~ Bdlouin back-scatter signal; see Fig. 1.
0-7803-631 9-1/00/$10.0002000 IEEE
