Patent ID: 8036539

Claim:
An optical transceiver module, comprising: a transmitter optical subassembly including a laser capable of producing an optical signal; a laser driver including a first bias current source that provides a bias current to the laser and a modulation current source that provides a modulation current to the laser, the bias and modulation currents for producing the optical signal; and means, separate from the laser driver, for amplifying substantially only the bias current provided to the laser by the first bias current source, wherein: the first bias current source and the means, separate from the laser driver, for amplifying substantially only the bias current are at least partially controlled by the same control line, the laser is configured for longwave optical transmission, the laser driver is configured for longwave optical transmission in the optical transceiver module and may be configured for shortwave optical transmission in a different optical transceiver module by omitting the means, separate from the laser driver, for amplifying substantially only the bias current, the means, separate from the laser driver, for amplifying substantially only the bias current operably connects with an LDBIAS pin and an LDCCOMP pin of the laser driver.