公开(公告)号：US20240007182A1

公开(公告)日：2024-01-04

申请号：US18337013

申请日：2023-06-18

Applicant: OPTIWAVE SYSTEMS INC.

Inventor： Ahmad Atieh ,  Muhammad Jawad Mirza ,  Salman Abdul Ghafoor

IPC: H04B10/032 ,  H04B10/516 ,  H04B10/50 ,  H04B10/564

CPC classification number: H04B10/032 ,  H04B10/516 ,  H04B10/503 ,  H04B10/564

Abstract: The present invention describes a free spectral range (FSR) and center wavelength tunable redundant optical comb based on a sagnac loop mirror (SLM) and bidirectional Mach-Zehnder modulator (BMZM). The optical signal from a continuous wave (CW) laser is split into two parts which travel in clockwise and counter clockwise directions inside the SLM and are modulated by sinusoidal RF signal with the help of BMZM. The modulation of optical signals with sinusoidal RF signal using BMZM results into the generation of two optical combs inside the SLM. Both optical combs are obtained simultaneously at the output port of the SLM when the polarization controller (PC) is adjusted to have 90° phase difference between the clockwise and counterclockwise generated combs. The proposed design can be used in protection switching and in data centers. A corresponding method for generating redundant optical combs is also provided.

公开(公告)号：US20230246408A1

公开(公告)日：2023-08-03

申请号：US18092187

申请日：2022-12-30

Applicant: OPTIWAVE SYSTEMS INC.

Inventor： Ahmad Atieh ,  Muhammad Jawad Mirza ,  Salman Abdul Ghafoor

IPC: H01S3/094 ,  H01S3/16 ,  H01S3/067 ,  H01S3/0941 ,  H01S3/23

CPC classification number: H01S3/094003 ,  H01S3/161 ,  H01S3/1608 ,  H01S3/1616 ,  H01S3/06754 ,  H01S3/0941 ,  H01S3/094042 ,  H01S3/23

Abstract: A Holmium-doped fiber amplifier (HDFA) with cascaded pumping is disclosed. The cascaded pumping has at least two pumping stages arranged so that an emission spectrum of a preceding pumping stage at least partly corresponds to an absorption spectrum of the succeeding pumping stage, and the pumping stages are staggered so that an emission spectrum of the last pumping stage at least partly corresponds to an absorption spectrum of the Holmium-doped fiber.