公开(公告)号：AT498143T

公开(公告)日：2011-02-15

申请号：AT03819185

申请日：2003-12-24

Applicant: PIRELLI & C SPA

Inventor： RAMPULLA ALBERTO ,  ROSSI GIACOMO ANTONIO

IPC: G02B6/38 ,  G02B6/36

公开(公告)号：AU2003232225A8

公开(公告)日：2004-11-23

申请号：AU2003232225

申请日：2003-04-29

Applicant: ST MICROELECTRONICS NV ,  PIRELLI & C SPA

Inventor： MARTINI FRANCESCO ,  MONTANINI PIETRO ,  OLIVETI GUIDO ,  RAMPULLA ALBERTO ,  ROSSI GIACOMO

IPC: G02B6/132 ,  G02B6/136 ,  G02B6/42 ,  G02B6/12

Abstract: A coupling structure for coupling optical radiation, i.e., light, between an optical fibre and an optical device, e.g., a laser diode or a photodiode. The coupling structure has an optical through-via which guides the optical radiation to or from the optical fibre. Light exiting the fibre travels through a guidance channel so it remains substantially confined to a narrow optical path that mimics the fibre core. Conversely, light enters the fibre after having traveled through the guidance channel. The guidance channel has a first core region, the "channel core", having first refractive index surrounded by a second region, the "channel cladding" having a second refractive index smaller than the first refractive index. The coupling structure, including the guidance channel, is preferably made of semiconductor-based material, more preferably of silicon-based material. The guidance channel is preferably silicon oxide. The coupling structure further has a fibre drive-in element, which facilitates insertion and alignment of the optical fibre to the guidance channel.

公开(公告)号：AU2003232225A1

公开(公告)日：2004-11-23

申请号：AU2003232225

申请日：2003-04-29

Applicant: PIRELLI & C SPA

Inventor： MARTINI FRANCESCO ,  MONTANINI PIETRO ,  OLIVETI GUIDO ,  RAMPULLA ALBERTO ,  ROSSI GIACOMO

IPC: G02B6/132 ,  G02B6/136 ,  G02B6/42 ,  G02B6/12

Abstract: A coupling structure for coupling optical radiation, i.e., light, between an optical fibre and an optical device, e.g., a laser diode or a photodiode. The coupling structure has an optical through-via which guides the optical radiation to or from the optical fibre. Light exiting the fibre travels through a guidance channel so it remains substantially confined to a narrow optical path that mimics the fibre core. Conversely, light enters the fibre after having traveled through the guidance channel. The guidance channel has a first core region, the "channel core", having first refractive index surrounded by a second region, the "channel cladding" having a second refractive index smaller than the first refractive index. The coupling structure, including the guidance channel, is preferably made of semiconductor-based material, more preferably of silicon-based material. The guidance channel is preferably silicon oxide. The coupling structure further has a fibre drive-in element, which facilitates insertion and alignment of the optical fibre to the guidance channel.

公开(公告)号：CA2571699C

公开(公告)日：2015-11-24

申请号：CA2571699

申请日：2004-06-30

Applicant: PIRELLI & C SPA

Inventor： ROSSI GIACOMO ANTONIO ,  RAMPULLA ALBERTO

IPC: H01S5/14

Abstract: An external-cavity tuneable laser includes a gain medium and a tuneable mirror. At least the tuneable mirror is in thermal contact, with a thermally conductive platform and lays substantially horizontally thereon. The laser beam from the gain medium is directed onto the tuneable mirror, which is mounted substantially horizontally with respect to the thermally conductive platform, by a deflector that deflects the beam or a large part of it towards one of the principal surfaces of the mirror. The resulting laser cavity is therefore a folded cavity. The thermally conductive platform is preferably thermally coupled to a TEC that provides thermal control for the platform. In a preferred embodiment, the deflector is a beam splitter that deflects part of the incoming light and transmits the remaining part. The portion of light transmitted through the beam splitter may form the output laser beam.

公开(公告)号：DE60336026D1

公开(公告)日：2011-03-24

申请号：DE60336026

申请日：2003-12-24

Applicant: PIRELLI & C SPA

Inventor： RAMPULLA ALBERTO ,  ROSSI GIACOMO ANTONIO

IPC: G02B6/38 ,  G02B6/36

公开(公告)号：AU2003296755A1

公开(公告)日：2005-07-21

申请号：AU2003296755

申请日：2003-12-24

Applicant: PIRELLI & C SPA

Inventor： RAMPULLA ALBERTO ,  ROSSI GIACOMO ANTONIO

IPC: G02B6/36 ,  G02B6/38

公开(公告)号：CA2571699A1

公开(公告)日：2006-01-12

申请号：CA2571699

申请日：2004-06-30

Applicant: PIRELLI & C SPA

Inventor： RAMPULLA ALBERTO ,  ROSSI GIACOMO ANTONIO

IPC: H01S5/14

Abstract: The present invention relates to an external-cavity tuneable laser including a gain medium (2) an a tuneable mirror (8), wherein at least the tuneable mirror is in thermal contact, with a thermally conductive platform (10). The tuneable mirror lays substantially horizontally on the thermally conductive platform significantly thereby improving the thermal contact of the tuneable mirror with the platform. The laser beam from the gain medium is directed onto the tuneable mirror, which is mounted substantially horizontally with respect to the thermally conductive platform, by means of a deflector (6) that deflects the beam or a large part of it towards on of the principal surfaces of the tuneable mirror. The resulting laser cavity is therefore a folded cavity. The thermally conductive platform is preferably thermally coupled to TEC (11) that provides thermal control for the platform. In a preferred embodiment, the deflector is a beam splitter that deflects part of the incoming light and transmits the remaining part. A beam splitter as deflector a more compact laser assembly can be envisaged. According to a preferred embodiment of the invention, the portion of light transmitted through the beam splitter forms the output laser beam. In other words, the external-cavity laser outputs a laser beam on the side of the wavelength selective elements (the tuneable mirror and, if any, the channel grid), i.e., on the side of the front facet of the laser diode. With this laser design, a collimating lens to collimate the output laser beam is not necessary.

公开(公告)号：AU2004321231A1

公开(公告)日：2006-01-12

申请号：AU2004321231

申请日：2004-06-30

Applicant: PIRELLI & C SPA

Inventor： ROSSI GIACOMO ANTONIO ,  RAMPULLA ALBERTO

IPC: H01S5/14

Abstract: The present invention relates to an external-cavity tuneable laser including a gain medium (2) an a tuneable mirror (8), wherein at least the tuneable mirror is in thermal contact, with a thermally conductive platform (10). The tuneable mirror lays substantially horizontally on the thermally conductive platform significantly thereby improving the thermal contact of the tuneable mirror with the platform. The laser beam from the gain medium is directed onto the tuneable mirror, which is mounted substantially horizontally with respect to the thermally conductive platform, by means of a deflector (6) that deflects the beam or a large part of it towards on of the principal surfaces of the tuneable mirror. The resulting laser cavity is therefore a folded cavity. The thermally conductive platform is preferably thermally coupled to TEC (11) that provides thermal control for the platform. In a preferred embodiment, the deflector is a beam splitter that deflects part of the incoming light and transmits the remaining part. A beam splitter as deflector a more compact laser assembly can be envisaged. According to a preferred embodiment of the invention, the portion of light transmitted through the beam splitter forms the output laser beam. In other words, the external-cavity laser outputs a laser beam on the side of the wavelength selective elements (the tuneable mirror and, if any, the channel grid), i.e., on the side of the front facet of the laser diode. With this laser design, a collimating lens to collimate the output laser beam is not necessary.