15 research outputs found
ΠΡΠ΅Π½ΠΊΠ° ΠΏΠΎΡΠ΅ΡΡ Π² ΠΎΠΏΡΠΈΡΠ΅ΡΠΊΠΈΡ ΠΏΠ»ΡΠ½ΠΎΡΠ½ΡΡ Π²ΠΎΠ»Π½ΠΎΠ²ΠΎΠ΄Π°Ρ Ρ ΡΠ΅ΡΠΎΡ ΠΎΠ²Π°ΡΡΠΌΠΈ Π³ΡΠ°Π½ΠΈΡΠ°ΠΌΠΈ ΠΈ ΠΏΠΎΠ³Π»ΠΎΡΠ΅Π½ΠΈΠ΅ΠΌ
The method of small indignations with use of the optics-geometrical approach solves a problem of light propagation in a ο¬lm waveguide with rough surfaces and absorption. Experimental researches speciο¬ed waveguide structures are carried out. Results of these researches substantially do not correspond to conclusions of the developed theory. As a result of the analysis of the revealed discrepancies and additional calculations more exact model of scattering process in ο¬lm waveguides with rough surfaces is oο¬ered.ΠΠ΅ΡΠΎΠ΄ΠΎΠΌ ΠΌΠ°Π»ΡΡ
Π²ΠΎΠ·ΠΌΡΡΠ΅Π½ΠΈΠΉ Ρ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΠ΅ΠΌ ΠΎΠΏΡΠΈΠΊΠΎ-Π³Π΅ΠΎΠΌΠ΅ΡΡΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ ΠΏΠΎΠ΄Ρ
ΠΎΠ΄Π° ΡΠ΅ΡΠ΅Π½Π° Π·Π°Π΄Π°ΡΠ° ΠΎ ΡΠ°ΡΠΏΡΠΎΡΡΡΠ°Π½Π΅Π½ΠΈΠΈ ΡΠ²Π΅ΡΠ° Π² ΠΏΠ»ΡΠ½ΠΎΡΠ½ΠΎΠΌ Π²ΠΎΠ»Π½ΠΎΠ²ΠΎΠ΄Π΅ Ρ ΡΠ΅ΡΠΎΡ
ΠΎΠ²Π°ΡΡΠΌΠΈ Π³ΡΠ°Π½ΠΈΡΠ°ΠΌΠΈ ΠΈ ΠΏΠΎΠ³Π»ΠΎΡΠ΅Π½ΠΈΠ΅ΠΌ. ΠΡΠΏΠΎΠ»Π½Π΅Π½Ρ ΡΠΊΡΠΏΠ΅ΡΠΈΠΌΠ΅Π½ΡΠ°Π»ΡΠ½ΡΠ΅ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡ ΡΠΊΠ°Π·Π°Π½Π½ΡΡ
Π²ΠΎΠ»Π½ΠΎΠ²ΠΎΠ΄Π½ΡΡ
ΡΡΡΡΠΊΡΡΡ. Π Π΅Π·ΡΠ»ΡΡΠ°ΡΡ ΡΡΠΈΡ
ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΠΉ Π½Π΅ΡΠΊΠΎΠ»ΡΠΊΠΎ ΡΠ°ΡΡ
ΠΎΠ΄ΡΡΡΡ Ρ Π²ΡΠ²ΠΎΠ΄Π°ΠΌΠΈ ΡΠ°Π·Π²ΠΈΡΠΎΠΉ ΡΠ΅ΠΎΡΠΈΠΈ. Π ΠΈΡΠΎΠ³Π΅ Π°Π½Π°Π»ΠΈΠ·Π° Π²ΡΡΠ²Π»Π΅Π½Π½ΡΡ
Π½Π΅ΡΠΎΠΎΡΠ²Π΅ΡΡΡΠ²ΠΈΠΉ ΠΏΡΠ΅Π΄Π»ΠΎΠΆΠ΅Π½Π° Π±ΠΎΠ»Π΅Π΅ ΡΠΎΡΠ½Π°Ρ ΠΌΠΎΠ΄Π΅Π»Ρ ΠΏΡΠΎΡΠ΅ΡΡΠ° ΡΠ°ΡΡΠ΅ΡΠ½ΠΈΡ Π² ΠΏΠ»ΡΠ½ΠΎΡΠ½ΡΡ
Π²ΠΎΠ»Π½ΠΎΠ²ΠΎΠ΄Π°Ρ
Ρ ΡΠ΅ΡΠΎΡ
ΠΎΠ²Π°ΡΡΠΌΠΈ Π³ΡΠ°Π½ΠΈΡΠ°ΠΌΠΈ
Π Π°ΡΡΡΡΠ½ΡΠΉ ΠΈ ΡΠΊΡΠΏΠ΅ΡΠΈΠΌΠ΅Π½ΡΠ°Π»ΡΠ½ΡΠΉ Π°Π½Π°Π»ΠΈΠ· Ρ Π°ΡΠ°ΠΊΡΠ΅ΡΠΈΡΡΠΈΠΊ Π°Π½Π°Π»ΠΈΠ·Π°ΡΠΎΡΠ° ΡΠΏΠ΅ΠΊΡΡΠ° ΡΠ΅ΡΠΎΡ ΠΎΠ²Π°ΡΠΎΡΡΠΈ ΠΏΠΎΠ²Π΅ΡΡ Π½ΠΎΡΡΠΈ
The analysis of characteristics of surface roughness spectrum analyzer prototype whichuses a waveguide light scattering is performed. Calculated characteristics and layout optionsare compared with measurements. The experimental spectrum of the surface roughness ofthe gradient waveguide is presented.ΠΡΠΏΠΎΠ»Π½Π΅Π½ Π°Π½Π°Π»ΠΈΠ· Ρ
Π°ΡΠ°ΠΊΡΠ΅ΡΠΈΡΡΠΈΠΊ ΠΌΠ°ΠΊΠ΅ΡΠ° Π°Π½Π°Π»ΠΈΠ·Π°ΡΠΎΡΠ° ΡΠΏΠ΅ΠΊΡΡΠ° ΡΠ΅ΡΠΎΡ
ΠΎΠ²Π°ΡΠΎΡΡΠΈ ΠΏΠΎΠ²Π΅ΡΡ
Π½ΠΎΡΡΠΈ, Π² ΠΊΠΎΡΠΎΡΠΎΠΌ ΠΈΡΠΏΠΎΠ»ΡΠ·ΡΠ΅ΡΡΡ Π²ΠΎΠ»Π½ΠΎΠ²ΠΎΠ΄Π½ΠΎΠ΅ ΡΠ°ΡΡΠ΅ΡΠ½ΠΈΠ΅ ΡΠ²Π΅ΡΠ°. Π Π°ΡΡΡΡΠ½ΡΠ΅ Ρ
Π°ΡΠ°ΠΊΡΠ΅ΡΠΈΡΡΠΈΠΊΠΈ ΠΈ ΠΏΠ°ΡΠ°ΠΌΠ΅ΡΡΡ ΠΌΠ°ΠΊΠ΅ΡΠ° ΡΠΎΠΏΠΎΡΡΠ°Π²Π»ΡΡΡΡΡ Ρ ΠΈΠ·ΠΌΠ΅ΡΠ΅Π½Π½ΡΠΌΠΈ. ΠΡΠ΅Π΄ΡΡΠ°Π²Π»Π΅Π½ ΡΠΊΡΠΏΠ΅ΡΠΈΠΌΠ΅Π½ΡΠ°Π»ΡΠ½ΡΠΉ ΡΠΏΠ΅ΠΊΡΡ ΡΠ΅ΡΠΎΡ
ΠΎΠ²Π°ΡΠΎΡΡΠΈ ΠΏΠΎΠ²Π΅ΡΡ
Π½ΠΎΡΡΠΈ Π³ΡΠ°Π΄ΠΈΠ΅Π½ΡΠ½ΠΎΠ³ΠΎ Π²ΠΎΠ»Π½ΠΎΠ²ΠΎΠ΄Π°
ΠΠ·Π»ΡΡΠ°ΡΠ΅Π»ΡΠ½ΡΠ΅ ΡΠ²ΠΎΠΉΡΡΠ²Π° Π³ΡΠ°Π΄ΠΈΠ΅Π½ΡΠ½ΡΡ Π³ΠΎΡΡΠΈΡΠΎΠ²Π°Π½Π½ΡΡ Π²ΠΎΠ»Π½ΠΎΠ²ΠΎΠ΄ΠΎΠ² Ρ ΠΌΠ΅ΡΠ°Π»Π»ΠΈΡΠ΅ΡΠΊΠΈΠΌ ΠΈΠ»ΠΈ ΠΏΠΎΠ»ΡΠΏΡΠΎΠ²ΠΎΠ΄Π½ΠΈΠΊΠΎΠ²ΡΠΌ ΠΏΠΎΠΊΡΡΡΠΈΠ΅ΠΌ
The numerical method has been employed to solve the problem of the TE-polarized light radiation from a corrugated graded-index waveguide with metal or semiconductor cladding for structures with and without a buffer layer. An analysis has been carried out of the basic radiational properties of these systems. The optimal corrugation depth has been found for metal-dielectric structures at which the radiated power reaches maximum. It is shown that the proper choice of parameters of the structure with the buffei layer and the high reflectivity of the metal cladding make it possible to emit practically the whole power of the waveguide wave in the prescribed direction. An Al-cladded structure with the buffer layer has been studied experimentally.Π§ΠΈΡΠ»Π΅Π½Π½ΡΠΌ ΠΌΠ΅ΡΠΎΠ΄ΠΎΠΌ ΡΠ΅ΡΠ΅Π½Π° Π·Π°Π΄Π°ΡΠ° ΠΎΠ± ΠΈΠ·Π»ΡΡΠ΅Π½ΠΈΠΈ ΡΠ²Π΅ΡΠ° Π’Π-ΠΏΠΎΠ»ΡΡΠΈΠ·Π°ΡΠΈΠΈ ΠΈΠ· Π³ΠΎΡΡΠΈΡΠΎΠ²Π°Π½Π½ΠΎΠ³ΠΎ Π³ΡΠ°Π΄ΠΈΠ΅Π½ΡΠ½ΠΎΠ³ΠΎ Π²ΠΎΠ»Π½ΠΎΠ²ΠΎΠ΄Π° Ρ ΠΌΠ΅ΡΠ°Π»Π»ΠΈΡΠ΅ΡΠΊΠΈΠΌ ΠΈΠ»ΠΈ ΠΏΠΎΠ»ΡΠΏΡΠΎΠ²ΠΎΠ΄Π½ΠΈΠΊΠΎΠ²ΡΠΌ ΠΏΠΎΠΊΡΡΡΠΈΠ΅ΠΌ ΠΏΡΠΈ Π½Π°Π»ΠΈΡΠΈΠΈ Π±ΡΡΠ΅ΡΠ½ΠΎΠ³ΠΎ ΡΠ»ΠΎΡ ΠΈ Π±Π΅Π· Π½Π΅Π³ΠΎ. ΠΡΠΏΠΎΠ»Π½Π΅Π½ Π°Π½Π°Π»ΠΈΠ· ΠΎΡΠ½ΠΎΠ²Π½ΡΡ
ΠΈΠ·Π»ΡΡΠ°ΡΠ΅Π»ΡΠ½ΡΡ
Ρ
Π°ΡΠ°ΠΊΡΠ΅ΡΠΈΡΡΠΈΠΊ ΡΡΠΈΡ
ΡΠΈΡΡΠ΅ΠΌ. ΠΠ»Ρ ΠΌΠ΅ΡΠ°Π»Π»ΠΎΠ΄ΠΈΡΠ»Π΅ΠΊΡΡΠΈΡΠ΅ΡΠΊΠΈΡ
ΡΡΡΡΠΊΡΡΡ ΡΡΡΠ°Π½ΠΎΠ²Π»Π΅Π½Π° ΠΎΠΏΡΠΈΠΌΠ°Π»ΡΠ½Π°Ρ Π³Π»ΡΠ±ΠΈΠ½Π° Π³ΠΎΡΡΠ°, ΠΏΡΠΈ ΠΊΠΎΡΠΎΡΠΎΠΉ ΠΈΠ·Π»ΡΡΠ°Π΅ΠΌΠ°Ρ ΠΌΠΎΡΠ½ΠΎΡΡΡ ΠΌΠ°ΠΊΡΠΈΠΌΠ°Π»ΡΠ½Π°. ΠΠΎΠΊΠ°Π·Π°Π½ΠΎ, ΡΡΠΎ ΠΏΡΠΈ ΠΏΡΠ°Π²ΠΈΠ»ΡΠ½ΠΎΠΌ Π²ΡΠ±ΠΎΡΠ΅ ΠΏΠ°ΡΠ°ΠΌΠ΅ΡΡΠΎΠ² ΡΡΡΡΠΊΡΡΡΡ Ρ Π±ΡΡΠ΅ΡΠ½ΡΠΌ ΡΠ»ΠΎΠ΅ΠΌ ΠΈ Π²ΡΡΠΎΠΊΠΎΠΉ ΠΎΡΡΠ°ΠΆΠ°ΡΠ΅Π»ΡΠ½ΠΎΠΉ ΡΠΏΠΎΡΠΎΠ±Π½ΠΎΡΡΠΈ ΠΌΠ΅ΡΠ°Π»Π»ΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ ΠΏΠΎΠΊΡΡΡΠΈΡ ΠΌΠΎΠΆΠ½ΠΎ ΠΈΠ·Π»ΡΡΠ°ΡΡ ΠΏΡΠ°ΠΊΡΠΈΡΠ΅ΡΠΊΠΈ Π²ΡΡ ΠΌΠΎΡΠ½ΠΎΡΡΡ Π²ΠΎΠ»Π½ΠΎΠ²ΠΎΠ΄Π½ΠΎΠΉ Π²ΠΎΠ»Π½Ρ Π² Π·Π°Π΄Π°Π½Π½ΠΎΠΌ Π½Π°ΠΏΡΠ°Π²Π»Π΅Π½ΠΈΠΈ. ΠΠΊΡΠΏΠ΅ΡΠΈΠΌΠ΅Π½ΡΠ°Π»ΡΠ½ΠΎ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½Π° ΡΡΡΡΠΊΡΡΡΠ° Ρ Π±ΡΡΠ΅ΡΠ½ΡΠΌ ΡΠ»ΠΎΠ΅ΠΌ ΠΈ ΠΏΠΎΠΊΡΡΡΠΈΠ΅ΠΌ ΠΈΠ· Πl
The waveguide method for measuring parameters of the surface layers
A new method has been applied for determining the mean square deviation of surface roughness and the imaginary part of permittivity of the material near-surface region. The method is based on the scattering and absorption of light in waveguide systems of integrated optics. It has high sensitivity and ease of implementation. The advantages of the proposed method are confirmed experimentally. Β© 2012 EDP Sciences
Effects of surface roughness and absorption on light propagation in graded-profile waveguides
This paper examines the effects of surface roughness and absorption on laser light propagation in graded-profile waveguiding structures. We derive analytical expressions for the scattering and absorption coefficients of guided waves and analyse these coefficients in relation to parameters of the waveguiding structure and the roughness of its boundary. A new approach is proposed to measuring roughness parameters of precision dielectric surfaces. Experi- mental evidence is presented which supports the main conclusions of the theory. Β© 2011 Kvantovaya Elektronika and Turpion Ltd
EXPERIMENTAL REALIZATION OF INTEGRAL TUNNEL DEVICE FOR EXCITATION OF THE BAND WAVE-GUIDE
EXPERIMENTAL REALIZATION OF INTEGRAL TUNNEL DEVICE FOR EXCITATION OF THE BAND WAVE-GUIDE
ΠΠ·Π»ΡΡΠ°ΡΠ΅Π»ΡΠ½ΡΠ΅ ΡΠ²ΠΎΠΉΡΡΠ²Π° Π³ΡΠ°Π΄ΠΈΠ΅Π½ΡΠ½ΡΡ Π³ΠΎΡΡΠΈΡΠΎΠ²Π°Π½Π½ΡΡ Π²ΠΎΠ»Π½ΠΎΠ²ΠΎΠ΄ΠΎΠ² Ρ ΠΌΠ΅ΡΠ°Π»Π»ΠΈΡΠ΅ΡΠΊΠΈΠΌ ΠΈΠ»ΠΈ ΠΏΠΎΠ»ΡΠΏΡΠΎΠ²ΠΎΠ΄Π½ΠΈΠΊΠΎΠ²ΡΠΌ ΠΏΠΎΠΊΡΡΡΠΈΠ΅ΠΌ
The numerical method has been employed to solve the problem of the TE-polarized light radiation from a corrugated graded-index waveguide with metal or semiconductor cladding for structures with and without a buffer layer. An analysis has been carried out of the basic radiational properties of these systems. The optimal corrugation depth has been found for metal-dielectric structures at which the radiated power reaches maximum. It is shown that the proper choice of parameters of the structure with the buffei layer and the high reflectivity of the metal cladding make it possible to emit practically the whole power of the waveguide wave in the prescribed direction. An Al-cladded structure with the buffer layer has been studied experimentally.Π§ΠΈΡΠ»Π΅Π½Π½ΡΠΌ ΠΌΠ΅ΡΠΎΠ΄ΠΎΠΌ ΡΠ΅ΡΠ΅Π½Π° Π·Π°Π΄Π°ΡΠ° ΠΎΠ± ΠΈΠ·Π»ΡΡΠ΅Π½ΠΈΠΈ ΡΠ²Π΅ΡΠ° Π’Π-ΠΏΠΎΠ»ΡΡΠΈΠ·Π°ΡΠΈΠΈ ΠΈΠ· Π³ΠΎΡΡΠΈΡΠΎΠ²Π°Π½Π½ΠΎΠ³ΠΎ Π³ΡΠ°Π΄ΠΈΠ΅Π½ΡΠ½ΠΎΠ³ΠΎ Π²ΠΎΠ»Π½ΠΎΠ²ΠΎΠ΄Π° Ρ ΠΌΠ΅ΡΠ°Π»Π»ΠΈΡΠ΅ΡΠΊΠΈΠΌ ΠΈΠ»ΠΈ ΠΏΠΎΠ»ΡΠΏΡΠΎΠ²ΠΎΠ΄Π½ΠΈΠΊΠΎΠ²ΡΠΌ ΠΏΠΎΠΊΡΡΡΠΈΠ΅ΠΌ ΠΏΡΠΈ Π½Π°Π»ΠΈΡΠΈΠΈ Π±ΡΡΠ΅ΡΠ½ΠΎΠ³ΠΎ ΡΠ»ΠΎΡ ΠΈ Π±Π΅Π· Π½Π΅Π³ΠΎ. ΠΡΠΏΠΎΠ»Π½Π΅Π½ Π°Π½Π°Π»ΠΈΠ· ΠΎΡΠ½ΠΎΠ²Π½ΡΡ
ΠΈΠ·Π»ΡΡΠ°ΡΠ΅Π»ΡΠ½ΡΡ
Ρ
Π°ΡΠ°ΠΊΡΠ΅ΡΠΈΡΡΠΈΠΊ ΡΡΠΈΡ
ΡΠΈΡΡΠ΅ΠΌ. ΠΠ»Ρ ΠΌΠ΅ΡΠ°Π»Π»ΠΎΠ΄ΠΈΡΠ»Π΅ΠΊΡΡΠΈΡΠ΅ΡΠΊΠΈΡ
ΡΡΡΡΠΊΡΡΡ ΡΡΡΠ°Π½ΠΎΠ²Π»Π΅Π½Π° ΠΎΠΏΡΠΈΠΌΠ°Π»ΡΠ½Π°Ρ Π³Π»ΡΠ±ΠΈΠ½Π° Π³ΠΎΡΡΠ°, ΠΏΡΠΈ ΠΊΠΎΡΠΎΡΠΎΠΉ ΠΈΠ·Π»ΡΡΠ°Π΅ΠΌΠ°Ρ ΠΌΠΎΡΠ½ΠΎΡΡΡ ΠΌΠ°ΠΊΡΠΈΠΌΠ°Π»ΡΠ½Π°. ΠΠΎΠΊΠ°Π·Π°Π½ΠΎ, ΡΡΠΎ ΠΏΡΠΈ ΠΏΡΠ°Π²ΠΈΠ»ΡΠ½ΠΎΠΌ Π²ΡΠ±ΠΎΡΠ΅ ΠΏΠ°ΡΠ°ΠΌΠ΅ΡΡΠΎΠ² ΡΡΡΡΠΊΡΡΡΡ Ρ Π±ΡΡΠ΅ΡΠ½ΡΠΌ ΡΠ»ΠΎΠ΅ΠΌ ΠΈ Π²ΡΡΠΎΠΊΠΎΠΉ ΠΎΡΡΠ°ΠΆΠ°ΡΠ΅Π»ΡΠ½ΠΎΠΉ ΡΠΏΠΎΡΠΎΠ±Π½ΠΎΡΡΠΈ ΠΌΠ΅ΡΠ°Π»Π»ΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ ΠΏΠΎΠΊΡΡΡΠΈΡ ΠΌΠΎΠΆΠ½ΠΎ ΠΈΠ·Π»ΡΡΠ°ΡΡ ΠΏΡΠ°ΠΊΡΠΈΡΠ΅ΡΠΊΠΈ Π²ΡΡ ΠΌΠΎΡΠ½ΠΎΡΡΡ Π²ΠΎΠ»Π½ΠΎΠ²ΠΎΠ΄Π½ΠΎΠΉ Π²ΠΎΠ»Π½Ρ Π² Π·Π°Π΄Π°Π½Π½ΠΎΠΌ Π½Π°ΠΏΡΠ°Π²Π»Π΅Π½ΠΈΠΈ. ΠΠΊΡΠΏΠ΅ΡΠΈΠΌΠ΅Π½ΡΠ°Π»ΡΠ½ΠΎ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½Π° ΡΡΡΡΠΊΡΡΡΠ° Ρ Π±ΡΡΠ΅ΡΠ½ΡΠΌ ΡΠ»ΠΎΠ΅ΠΌ ΠΈ ΠΏΠΎΠΊΡΡΡΠΈΠ΅ΠΌ ΠΈΠ· Πl