Patents by Inventor Shaif-Ul Alam

Shaif-Ul Alam 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).

  • Optical fiber with corrugations
    Patent number: 11585976
    Abstract: An optical fiber has corrugations on an outer surface to dissipate a portion of an input light beam, allowing the remaining portion of the light beam to be coupled to the optical fiber. By dissipating the portion of input light, damage to the optical fiber by uncoupled light is reduced.
    Type: Grant
    Filed: April 1, 2021
    Date of Patent: February 21, 2023
    Assignees: SAUDI ARABIAN OIL COMPANY, University of Southampton
    Inventors: Hesham Sakr, Hans Christian Hansen Mulvad, Shaif-ul Alam, Lin Xu, Callum Smith, John Hayes, David Richardson, Francesco Poletti, Damian Pablo San Roman Alerigi, Sameeh Issa Batarseh
  • Nested anti-resonant nodeless optical fiber and subsurface system using the same
    Patent number: 11555958
    Abstract: A nested anti-resonant nodeless hollow core fiber (NANF) enables transmission of multi-kilowatt, continuous wave (CW) light beams operating in wavelengths between 1050 nm and 1100 nm provided by single mode lasers. Such a NANF has little loss over kilometer ranges, and can be employed in long distance subsurface applications, such as in the petroleum industry.
    Type: Grant
    Filed: April 1, 2021
    Date of Patent: January 17, 2023
    Assignees: SAUDI ARABIAN OIL COMPANY, University of Southampton
    Inventors: Hesham Sakr, Hans Christian Hansen Mulvad, Shaif-ul Alam, Lin Xu, Callum Smith, John Hayes, David Richardson, Francesco Poletti, Damian Pablo San Roman Alerigi, Sameeh Issa Batarseh
  • NESTED ANTI-RESONANT NODELESS OPTICAL FIBER AND SUBSURFACE SYSTEM USING THE SAME
    Publication number: 20220317369
    Abstract: A nested anti-resonant nodeless hollow core fiber (NANF) enables transmission of multi-kilowatt, continuous wave (CW) light beams operating in wavelengths between 1050 nm and 1100 nm provided by single mode lasers. Such a NANF has little loss over kilometer ranges, and can be employed in long distance subsurface applications, such as in the petroleum industry.
    Type: Application
    Filed: April 1, 2021
    Publication date: October 6, 2022
    Inventors: Hesham Sakr, Hans Christian Hansen Mulvad, Shaif-ul Alam, Lin Xu, Callum Smith, John Hayes, David Richardson, Francesco Poletti, Damian Pablo San Roman Alerigi, Sameeh Issa Batarseh
  • OPTICAL FIBER WITH CORRUGATIONS
    Publication number: 20220317365
    Abstract: An optical fiber has corrugations on an outer surface to dissipate a portion of an input light beam, allowing the remaining portion of the light beam to be coupled to the optical fiber. By dissipating the portion of input light, damage to the optical fiber by uncoupled light is reduced.
    Type: Application
    Filed: April 1, 2021
    Publication date: October 6, 2022
    Inventors: Hesham Sakr, Hans Christian Hansen Mulvad, Shaif-ul Alam, Lin Xu, Callum Smith, John Hayes, David Richardson, Francesco Poletti, Damian Pablo San Roman Alerigi, Sameeh Issa Batarseh
  • Non-linearity compensation in optical devices and transmission systems
    Publication number: 20020141041
    Abstract: A method of an apparatus for compensating optical non-linearity in optical devices and transmission systems. Two second order interactions are cascaded in phase-mismatched second harmonic generation to accumulate a non-linear phase shift of a fundamental wave. The non-linear phase shift can be set to provide a desired amount of non-linearity compensation. Compensation takes place in a compensating medium having a negative effective non-linear refractive index at the design operating conditions of the compensating medium. Compensators incorporating these principles may be incorporated as passive or active components in optical transmitters, repeaters or receivers. Active components may be tuned by varying the operating condition of the compensating medium, for example by controlling temperature or applied stress.
    Type: Application
    Filed: August 10, 2001
    Publication date: October 3, 2002
    Inventors: David Neil Payne, Shaif-Ul Alam, Geoffrey Lynn Burdge, Anatoly Borisovich Grudinin