公开(公告)号：WO2020131797A1

公开(公告)日：2020-06-25

申请号：PCT/US2019/066731

申请日：2019-12-17

Applicant: IPG PHOTONICS CORPORATION

Inventor： BUABBUD, George ,  SAMARTSEV, Igor ,  GLEBOV, Leonid

IPC: H01S5/12 ,  H01S5/14

Abstract: An external cavity diode laser (ECDL) tunable to a plurality of channels of any selected grid is configured with a volume Bragg grating (VBG) and a continuous wave (CW) chip. In accordance with aspect of the disclosure, the VBG is configured as a chirped volume bragg mirror (CVBM) provided with a chirp of the grating period which is selected to compensate for a phase shift upon switching to a new desired wavelength. The desired wavelength is selected by using a Vernier effect between two tunable FP etalons.

公开(公告)号：WO2004070457A3

公开(公告)日：2004-08-19

申请号：PCT/US2004/003383

申请日：2004-02-06

Applicant: IPG PHOTONICS CORPORATION ,  BUABBUD, George ,  LEONARD, JR., Dennis P. ,  FUCHS, Wolfram Bern ,  SAMARTSEV, Igor

Inventor： BUABBUD, George ,  LEONARD, JR., Dennis P. ,  FUCHS, Wolfram Bern ,  SAMARTSEV, Igor

IPC: H04J14/02

Abstract: Apparatus and method for equalizing a multiplicity of amplifier optical output signals comprised of a combined broadcast optical signal and a narrowcast optical signal having different bands of wavelengths of light by adjusting the power output level of at least one the signals in response to an amplified sample of the signal. A light switch (114) or attenuator (110, 112) and a sensor (116) for determining whether a transmission fiber (120) is in place is connected to each of the multiplicity of optical output signals to allow the optical output signals to be turned on and off for maintenance and repair.