×

Multi-wavelength filtering device using optical fiber Bragg grating

  • US 5,608,825 A
  • Filed: 02/01/1996
  • Issued: 03/04/1997
  • Est. Priority Date: 02/01/1996
  • Status: Expired due to Term
First Claim
Patent Images

1. A multi-wavelength optical filtering device for optical signal transmission, said device comprising:

  • a first optical circulator having at least four circulator ports including an input port and a plurality of sequential ports for circulating optical signals from the input port to a next sequential port in a circulating direction, the last of said sequential ports being an output port, anda wavelength selective means coupled to each of said sequential ports except said output port for reflecting a selected portion of said optical signals and transmitting another portion of said optical signals.

View all claims
  • 6 Assignments
Timeline View
Assignment View
    ×
    ×