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Optical transceiver and method of operation thereof

  • US 8,866,058 B2
  • Filed: 07/22/2010
  • Issued: 10/21/2014
  • Est. Priority Date: 08/04/2009
  • Status: Expired due to Fees
First Claim
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1. An optical transceiver comprising:

  • a light source which can be controlled by a driver current and emits light, which is radiated by the optical transceiver;

    a wavelength stabilization unit for stabilizing the wavelength of the light emitted by the light source, comprising;

    a sensor device for detecting a wavelength drift;

    a control unit connected to the sensor device and the light source for controlling the driver current as a function of the sensor signals so as to counteract a drift of the wavelength, whereinthe wavelength stabilization unit comprises a wavelength sensor for determining a central wavelength of the emitted light and a regulating circuit for compensating for a wavelength drift of the emitted light,the wavelength sensor comprises two photodiodes of different spectral sensitivity;

    characterized in thatthe optical transceiver comprises a detector for measuring light received by the optical transceiver, an amplifier for amplifying an electrical output signal of the detector with a switchable gain, and a control circuit which is suitable for controlling the gain as a function of a sum signal of output signals of the two photodiodes.

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