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Patent Agency Ranking
公开(公告)号：JP2003198056A
公开(公告)日：2003-07-11
申请号：JP2002188775
申请日：2002-06-27
Applicant: KOREA ELECTRONICS TELECOMM
Inventor： OH KWANG RYONG , LEE MYUNG LAE , KIM HYUN SOO , SONG JUNG HO , KIM KANG HO
Abstract: PROBLEM TO BE SOLVED: To provide a variable wavelength external resonator which can vary the wavelength by an electric signal, can successively very a wavelength at high speed, and uses a light deflector stably operating according to the electric signal. SOLUTION: A light beam emitted from a light source 301 is transformed to a parallel light beam by a lens 302a. The parallel light beam is diffracted on a diffraction grating 304, and is propagated through a light deflector 308 arranged between a reflecting mirror 305 and the diffraction grating 304. The light deflector 308 is configured so that an index of refraction can vary according to an input electric signal. Of light beams propagating through the light deflector 308, only a light beam with a specific wavelength is emitted perpendicularly to the reflecting mirror 305. Thus, the light beam with the specific wavelength is refocused on the light source 301. COPYRIGHT: (C)2003,JPO
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公开(公告)号：CA2391796C
公开(公告)日：2007-04-03
申请号：CA2391796
申请日：2002-06-27
Applicant: KOREA ELECTRONICS TELECOMM
Inventor： KIM KANG HO , SONG JUNG HO , KIM HYUN SOO , OH KWANG RYONG , LEE MYUNG LAE
Abstract: The present invention relates to an optical deflector driven by an electrical signal, and a wavelength unable external resonator using the same . The optical deflector of a triangle shape, capable of controlling the refractive index of a beam depending on the electrical signal, is positioned between a reflection mirror and a diffraction grating in a Littman-Metcalf mode extern al resonator or between a lens and the diffraction grating in a Littrow mode external resonator. Thus, even with the reflection mirror and the diffractin g grating fixed, the refractive index of the beam generated from a laser diode can be controlled by adjusting the electrical signal applied to the optical deflector, so that beam having a specific wavelength can be focused and the wavelength can be rapidly and consecutively tuned.
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公开(公告)号：CA2391796A1
公开(公告)日：2003-06-15
申请号：CA2391796
申请日：2002-06-27
Applicant: KOREA ELECTRONICS TELECOMM
Inventor： SONG JUNG HO , KIM KANG HO , LEE MYUNG LAE , OH KWANG RYONG , KIM HYUN SOO
Abstract: The present invention relates to an optical deflector driven by an electrical signal, and a wavelength unable external resonator using the same . The optical deflector of a triangle shape; capable of controlling the refractive index of a beam depending on the electrical signal, is positioned between a reflection mirror and a diffraction grating in a Littman-Metcalf mode extern al resonator or between a lens and the diffraction grating in a Littrow mode external resonator. Thus, even with the reflection mirror and the diffractin g grating fixed, the refractive index of the beam generated from a laser diode can be controlled by adjusting the electrical signal applied to the optical deflector; so that beam having a specific wavelength can be focused and the wavelength can be rapidly and consecutively tuned.
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公开(公告)号：FR2833768B1
公开(公告)日：2006-10-20
申请号：FR0208065
申请日：2002-06-28
Applicant: KOREA ELECTRONICS TELECOMM
Inventor： OH KWANG RYONG , LEE MYUNG LAE , KIM HYUN SOO , SONG JUNG HO , KIM KANG HO
Abstract: The present invention relates to an optical deflector driven by an electrical signal, and a wavelength tunable external resonator using the same. The optical deflector of a triangle shape, capable of controlling the refractive index of a beam depending on the electrical signal, is positioned between a reflection mirror and a diffraction grating in a Littman-Metcalf mode external resonator or between a lens and the diffraction grating in a Littrow mode external resonator. Thus, even with the reflection mirror and the diffracting grating fixed, the refractive index of the beam generated from a laser diode can be controlled by adjusting the electrical signal applied to the optical deflector, so that beam having a specific wavelength can be focused and the wavelength can be rapidly and consecutively tuned.
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公开(公告)号：FR2833768A1
公开(公告)日：2003-06-20
申请号：FR0208065
申请日：2002-06-28
Applicant: KOREA ELECTRONICS TELECOMM
Inventor： OH KWANG RYONG , LEE MYUNG LAE , KIM HYUN SOO , SONG JUNG HO , KIM KANG HO
Abstract: The present invention relates to an optical deflector driven by an electrical signal, and a wavelength tunable external resonator using the same. The optical deflector of a triangle shape, capable of controlling the refractive index of a beam depending on the electrical signal, is positioned between a reflection mirror and a diffraction grating in a Littman-Metcalf mode external resonator or between a lens and the diffraction grating in a Littrow mode external resonator. Thus, even with the reflection mirror and the diffracting grating fixed, the refractive index of the beam generated from a laser diode can be controlled by adjusting the electrical signal applied to the optical deflector, so that beam having a specific wavelength can be focused and the wavelength can be rapidly and consecutively tuned.
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