Patents by Inventor Nadhum Kadhum ZAYER
Nadhum Kadhum ZAYER has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Publication number: 20230352898Abstract: An amplifier operable with an electric drive signal can amplify signal light having a signal wavelength. A laser diode has an active section with input and output facets. The facets are in optical communication with the signal light and are configured to pass the signal light through the laser diode. The active section is configured to generate pump light in response to injection of the electrical drive signal into the active section. The pump light has a pump wavelength different from the signal wavelength. A doped fiber doped with an active dopant is in optical communication with the signal light and is in optical communication with at least a portion of the pump light from the laser diode. The pump wavelength of the pump light is configured to interact with the active dopant of the fiber and thereby amplify the signal light.Type: ApplicationFiled: June 29, 2023Publication date: November 2, 2023Inventors: Ian Peter McClean, Nadhum Kadhum ZAYER, Martin Richard WILLIAMS
-
Patent number: 11728613Abstract: An amplifier operable with an electric drive signal can amplify signal light having a signal wavelength. A laser diode has an active section with input and output facets. The facets are in optical communication with the signal light and are configured to pass the signal light through the laser diode. The active section is configured to generate pump light in response to injection of the electrical drive signal into the active section. The pump light has a pump wavelength different from the signal wavelength. A doped fiber doped with an active dopant is in optical communication with the signal light and is in optical communication with at least a portion of the pump light from the laser diode. The pump wavelength of the pump light is configured to interact with the active dopant of the fiber and thereby amplify the signal light.Type: GrantFiled: January 25, 2021Date of Patent: August 15, 2023Assignee: II-VI DELAWARE, INC.Inventors: Ian Peter McClean, Nadhum Kadhum Zayer, Martin Richard Williams
-
Publication number: 20230246415Abstract: A dual output laser diode may include first and second end facets and an active section. The first and second end facets have low reflectivity. The active section is positioned between the first end facet and the second end facet. The active section is configured to generate light that propagates toward each of the first and second end facets. The first end facet is configured to transmit a majority of the light that reaches the first end facet through the first end facet. The second end facet is configured to transmit a majority of the light that reaches the second end facet through the second end facet.Type: ApplicationFiled: April 10, 2023Publication date: August 3, 2023Inventors: Nadhum Kadhum Zayer, Abram Jakubowicz, Jean Axel Edmond Teissier, Susanne Pawlik
-
Patent number: 11652332Abstract: A dual output laser diode may include first and second end facets and an active section. The first and second end facets have low reflectivity. The active section is positioned between the first end facet and the second end facet. The active section is configured to generate light that propagates toward each of the first and second end facets. The first end facet is configured to transmit a majority of the light that reaches the first end facet through the first end facet. The second end facet is configured to transmit a majority of the light that reaches the second end facet through the second end facet.Type: GrantFiled: August 11, 2020Date of Patent: May 16, 2023Assignee: II-VI DELAWARE, INCInventors: Nadhum Kadhum Zayer, Abram Jakubowicz, Jean Axel Edmond Teissier, Susanne Pawlik
-
Publication number: 20220239052Abstract: An amplifier operable with an electric drive signal can amplify signal light having a signal wavelength. A laser diode has an active section with input and output facets. The facets are in optical communication with the signal light and are configured to pass the signal light through the laser diode. The active section is configured to generate pump light in response to injection of the electrical drive signal into the active section. The pump light has a pump wavelength different from the signal wavelength. A doped fiber doped with an active dopant is in optical communication with the signal light and is in optical communication with at least a portion of the pump light from the laser diode. The pump wavelength of the pump light is configured to interact with the active dopant of the fiber and thereby amplify the signal light.Type: ApplicationFiled: January 25, 2021Publication date: July 28, 2022Inventors: Ian Peter McClean, Nadhum Kadhum ZAYER, Martin Richard WILLIAMS
-
Publication number: 20220052510Abstract: A dual output laser diode may include first and second end facets and an active section. The first and second end facets have low reflectivity. The active section is positioned between the first end facet and the second end facet. The active section is configured to generate light that propagates toward each of the first and second end facets. The first end facet is configured to transmit a majority of the light that reaches the first end facet through the first end facet. The second end facet is configured to transmit a majority of the light that reaches the second end facet through the second end facet.Type: ApplicationFiled: August 11, 2020Publication date: February 17, 2022Inventors: Nadhum Kadhum Zayer, Abram Jakubowicz, Jean Axel Edmond Teissier, Susanne Pawlik
-
Publication number: 20220052503Abstract: A dual output laser diode may include first and second end facets and an active section. The first and second end facets have low reflectivity. The active section is positioned between the first end facet and the second end facet. The active section is configured to generate light that propagates toward each of the first and second end facets. The first end facet is configured to transmit a majority of the light that reaches the first end facet through the first end facet. The second end facet is configured to transmit a majority of the light that reaches the second end facet through the second end facet.Type: ApplicationFiled: May 2, 2021Publication date: February 17, 2022Inventors: Ian Peter McClean, Nadhum Kadhum ZAYER, Martin Richard WILLIAMS
-
Patent number: 10186829Abstract: A compact, wavelength-stabilized laser source is provided by utilizing a specialty gain element (i.e., formed to include a curved waveguide topology), where a separate wavelength stabilization component (for example, a fiber Bragg grating (FBG)) is used one of the mirrors for the laser cavity. That is, the FBG takes the place of the physical “front facet” of the gain element, and functions to define the laser cavity in the first instance, while also utilizing the grating structure to impart the desired wavelength stability to the output from the packaged laser source. As a result, the FBG is disposed within the same package used to house the gain element and provides a wavelength-stabilized laser source in a compact form.Type: GrantFiled: April 20, 2017Date of Patent: January 22, 2019Assignee: II-VI IncorporatedInventor: Nadhum Kadhum Zayer
-
Publication number: 20170331246Abstract: A compact, wavelength-stabilized laser source is provided by utilizing a specialty gain element (i.e., formed to include a curved waveguide topology), where a separate wavelength stabilization component (for example, a fiber Bragg grating (FBG)) is used one of the mirrors for the laser cavity. That is, the FBG takes the place of the physical “front facet” of the gain element, and functions to define the laser cavity in the first instance, while also utilizing the grating structure to impart the desired wavelength stability to the output from the packaged laser source. As a result, the FBG is disposed within the same package used to house the gain element and provides a wavelength-stabilized laser source in a compact form.Type: ApplicationFiled: April 20, 2017Publication date: November 16, 2017Applicant: II-VI IncorporatedInventor: Nadhum Kadhum Zayer
-
Patent number: 9385504Abstract: A light source assembly (300) for emitting depolarized light, and comprising: at least one light source (312) configured to emit substantially polarized light; and a light depolarizer (318) arranged to receive light from the light source and comprising a high birefringence optical fiber having a longitudinal core and orthogonal birefringent axes having an angular displacement around the core that varies along the length of the fiber, wherein light emitted from the depolarizer comprises a plurality of polarization states.Type: GrantFiled: April 25, 2014Date of Patent: July 5, 2016Assignee: II-VI INCORPORATEDInventors: Ian Peter McClean, Nadhum Kadhum Zayer
-
Publication number: 20150311668Abstract: A light source assembly (300) for emitting depolarized light, and comprising: at least one light source (312) configured to emit substantially polarized light; and a light depolarizer (318) arranged to receive light from the light source and comprising a high birefringence optical fibre having a longitudinal core and orthogonal birefringent axes having an angular displacement around the core that varies along the length of the fibre, wherein light emitted from the depolarizer comprises a plurality of polarization states.Type: ApplicationFiled: April 25, 2014Publication date: October 29, 2015Applicant: II-VI IncorporatedInventors: Ian Peter McClean, Nadhum Kadhum Zayer
-
Publication number: 20140308001Abstract: The present invention discloses an optical fibre (20) for coupling to an optical source (18) which includes a core (22) and a tip portion (36). The core (22) is for receiving light directed from the optical source along an optical axis; wherein the core is expanded near one end of the optical fibre, and the expanded core (24) having a diameter larger than other portions of the core that are not expanded. The tip portion (36) is on the end of the optical fibre, wherein the tip portion further includes an endmost face (26), the endmost face being non-perpendicular to the optical axis. A coupling system including such an optical fibre and a method of fabricating a coupling device for the optical fibre are also disclosed. The optical fibre as provided by the present invention not only enables high coupling efficiency with different laser mode sizes, but also reduces the back reflected laser from the optical fibre which may otherwise damage the laser semiconductor chip.Type: ApplicationFiled: July 24, 2012Publication date: October 16, 2014Applicant: OCLARO TECHNOLOGY LIMITEDInventors: Yeqi Lao, Xiefu Lei, Adrian Perrin Janssen, Nadhum Kadhum Zayer
-
Patent number: 8707714Abstract: There is disclosed an electronic apparatus comprising a chip within a casing. A thermoelectric cooler has thermal connections to the chip and the casing and is configured to transport heat from the chip to the casing. A temperature measuring device is provided for determining the temperature of the chip. A control system is configured to maintain the chip at a target temperature by controlling current supplied to the thermoelectric cooler in response to the measured temperature. A temperature selection system is configured to select the chip target temperature dynamically on the basis of the casing temperature.Type: GrantFiled: November 9, 2010Date of Patent: April 29, 2014Inventors: Nadhum Kadhum Zayer, Jonathan Stuart Drake
-
Publication number: 20140010251Abstract: A tunable external cavity laser for use as a pump laser in an optical amplifier such as a Raman amplifier or erbium doped fibre amplifier comprising a semiconductor gain device (12) operable to provide light amplification, a diffraction grating (18) for selecting the wavelength of operation of the laser and a MEMs actuator for changing the selected wavelength. A plurality of gain devices can be coupled together to improve the bandwidth or gain of the optical amplifier.Type: ApplicationFiled: January 6, 2012Publication date: January 9, 2014Applicant: OCLARO TECHNOLOGY LIMITEDInventors: Nadhum Kadhum Zayer, Jan Lewandowski, Ian Peter McClean
-
Publication number: 20130120831Abstract: An optical amplifier system is provided which comprises first and second optical amplifiers (1, 2) for amplifying optical signals in a fibre optic communications link and a common pump (3) for optically pumping both the first amplifier (1) and the second amplifier (2) to effect such amplification. There is also provided an optical switch (6) for providing an optical path between the pump and the first amplifier in a first switching state and an optical path between the pump and the second amplifier in a second switching state to enable pumping of the first and second amplifiers by the pump sequentially. Advantageously this arrangement provides high accuracy to the outputs (4, 5) of the pump (3) and reduces low power pump noise.Type: ApplicationFiled: May 11, 2011Publication date: May 16, 2013Inventors: Ian Peter McClean, Nadhum Kadhum Zayer, Barrie Flintham, Jonathan Stuart Drake
-
Publication number: 20120087384Abstract: There is disclosed an electronic apparatus comprising a chip within a casing. A thermoelectric cooler has thermal connections to the chip and the casing and is configured to transport heat from the chip to the casing. A temperature measuring device is provided for determining the temperature of the chip. A control system is configured to maintain the chip at a target temperature by controlling current supplied to the thermoelectric cooler in response to the measured temperature. A temperature selection system is configured to select the chip target temperature dynamically on the basis of the casing temperature.Type: ApplicationFiled: November 9, 2010Publication date: April 12, 2012Inventors: Nadhum Kadhum ZAYER, Jonathan Stuart Drake