发明申请
- 专利标题: WAVELENGTH DIVISION MULTIPLEXED OPTICAL COMMUNICATION SYSTEM HAVING VARIABLE CHANNEL SPACINGS
- 专利标题(中): 具有可变通道间距的波长段多路光通信系统
-
申请号: US12897784申请日: 2010-10-05
-
公开(公告)号: US20120082453A1公开(公告)日: 2012-04-05
- 发明人: Kuang-Tsan Wu , John D. McNicol , David F. Welch , Stephen G. Grubb , Pierre Mertz
- 申请人: Kuang-Tsan Wu , John D. McNicol , David F. Welch , Stephen G. Grubb , Pierre Mertz
- 专利权人: Infinera Corporation
- 当前专利权人: Infinera Corporation
- 主分类号: H04J14/00
- IPC分类号: H04J14/00
摘要:
Consistent with the present disclosure, data, in digital form, is received by a transmit nodes of an optical communication, and converted to analog signal by a digital-to-analog converter (DAC) to drive a modulator. The modulator, in turn, modulates light at one of a plurality of wavelengths in accordance with the received data. The modulated light is then transmitted over an optical communication path to a receive node. At the receive node, the modulated optical signal, as well as other modulated optical signals are supplied to a photodetector circuit, which receives additional light at one of the optical signal wavelengths from a local oscillator laser. An analog-to-digital converter (ADC) is provided in the receive node to convert the electrical signals output from the photodetector into digital form. The output from the ADC is then filtered in the electrical domain, such that optical demultiplexing of individual channels is unnecessary.