Title:
【発明の名称】光伝送の所与の帯域を選択するための高周波/マイクロ波および光混合技術を使用するための方法および装置
Document Type and Number:
Japanese Patent JP2003502902
Kind Code:
A
Abstract:
A method and apparatus (10) are provided for transmitting (12, 14) and receiving (24, 26) multiple RF/microwave subcarriers on a single optical wavelength over an optical link. The method includes the steps of modulating a plurality of RF/microwave subcarrier frequencies with a respective communication signal and modulating an optical carrier wave with the plurality of modulated RF/microwave subcarrier frequencies. The method further includes the steps of detecting the plurality of RF/microwave subcarriers of the optical carrier wave and mixing (102) those subcarriers with a first local oscillator (LO) frequency to create a new heterodyne IF frequency above the highest frequency component of the modulated signal spectrum of the detected subcarriers, filtering an RF/microwave subcarrier frequency of the plurality of detected RF/microwave subcarriers utilizing a bandpass filter (106) at an IF center frequency of the new IF frequency and mixing the filtered RF/microwave subcarrier with a second local oscillator (LO) (108) frequency to derive a difference frequency at a desired center frequency for propagation over the subsequent network element.
Inventors:
Bradley, Mels
Application Number:
JP2001504095A
Publication Date:
January 21, 2003
Filing Date:
June 09, 2000
Export Citation:
Assignee:
Fiber Space, Incorporated
International Classes:
G02F2/00; H04B10/2575; H04B10/64; H04J14/02; H04N7/22; (IPC1-7): H04N7/22; G02F2/00; H04B10/04; H04B10/06; H04B10/142; H04B10/152
Attorney, Agent or Firm:
Masao Okabe (11 others)