The multi-wavelength laser is a ring laser source working at room temperature. The laser has an inner cavity disposed in an outer cavity. A pair of circulators disposed in the inner cavity is configured to assure counter-propagation of light between the inner cavity and the outer cavity. A gain-clamped semiconductor optical amplifier (GC-SOA) is formed …

Legal parties

Inventors (applicants): Khurram Karim Qureshi
Assignees (initial): King Fahd University of Petroleum and Minerals (Dhahran, SA)
Agents: Richard C Litman (attorney)

The application was examined by Kinam Park (USPTO dept. 2828)


  • 1. A multi-wavelength laser, comprising: …
  • 2. The multi-wavelength laser according to claim 1 , wherein said circulator pair is configured …
  • 3. The multi-wavelength laser according to claim 2 , wherein said filter disposed in said …

Cited documents


  • Peter et al. US 2009/0153844 A1, Jun. 1, 2009
  • Da Silva et al. US 5239607 A, Aug. 1, 1993
  • Lee et al. US 2005/0271384 A1 / 398/13, Dec. 1, 2005
  • Huber et al. US 2009/0174931 A1 / 359/340, Jul. 1, 2009


Brief Description of the Drawings

FIG. 1 is a block diagram of a GC-SOA equipped ring laser for a multi-wavelength laser according to the present invention. FIG. 2 is a wavelength comparison plot of the GC-SOA …


Background of the Invention

1. Field of the Invention The present invention relates to optical laser technology, and particularly to a multi-wavelength laser configured to provide stable multi-lasing over a variety of temperatures and time …

Detailed Description of the Preferred Embodiments

The multi-wavelength laser is a ring laser source working at room temperature. The configuration is based on a gain-clamped semiconductor optical amplifier (GC-SOA). The performance of a GC-SOA improves, in terms …

More details about Multi-Wavelength Laser

Miscellaneous patent data

The invention is named Multi-Wavelength Laser, explained by 7 figures, categorized under Optical Fiber Laser as a primary classification, the patent particularly claims a multi-wavelength laser, comprising…, the claim 1 is exemplary as chosen by the examiner, the grant number is 08831047 (publication number), the agent's last name is Litman, and his first name is Richard C, the invention description is illustrated by 6 drawings, the grant publication date is Sep. 9, 2014, the protection scope is defined by 10 claims, the assignee location is Dhahran (SA); its company is King Fahd University of Petroleum and Minerals, the assignee classification - a foreign company or corporation, the application publication date is Feb. 19, 2013, the examination was conducted by Kinam Park, the main examiner (2828 USPTO department), invented by Khurram Karim Qureshi, similar patents are classified under Construction or shape of the optical resonator, Particular Pumping Means, using scattering effects, e.g. stimulated Brillouin or Raman effects, Plural cavities, Grating, Phase, amorphous, e.g. glass, Injection, in gas lasers, monitoring the optical output parameters, the application number is 13/771,054 (U.S.), the exemplary patent drawings are Spectrum plot of the GC-SOA, Wavelength comparison plot of the GC-SOA, Block diagram of a GC-SOA, Multi-Wavelength Laser, the inventor's name is Qureshi Khurram Karim.

Invention classification information

The invention is classified under Folded cavity, Producing plural wavelength output, Polarizer, Optical Fiber Laser, Plural cavities, Tuning, using scattering effects, e.g. stimulated Brillouin or Raman effects, Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating. The designated search classifications include Tuning, Plural cavities, Polarizer, Producing plural wavelength output, Optical Fiber Laser, Folded cavity.

Patent details
Publication number 08831047
Publication date Sep. 9, 2014
Kind code B1
Application number 13/771,054
Application date Feb. 19, 2013
Application type U
Application series code 13
National classification 372/6
Total number of claims 10
Exemplary claims 1
Number of drawings 6
Number of figures 7
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