Methods and apparatus for monitoring and controlling optical mod

Details Methods and apparatus for monitoring and controlling optical mod Methods and apparatus for monitoring and controlling optical mod

1998-02-11

2000-08-22

Ben, Loha

Optical: systems and elements

Optical modulator

Light wave temporal modulation

359237, 359181, G02F 107

Patent

active

061081191

ABSTRACT:
Automatic bias setting circuits for multiple quantum well (MQW) diodes and optical modulators generally are described. Both digital and analog circuits are provided and techniques for utilizing such circuits for monitoring and controlling optical modulator signal quality are disclosed. In one approach, a desired modulation voltage range is determined. A bias voltage is stepped from a first predetermined voltage up to a second predetermined voltage. A maximum differential photocurrent is determined and the bias voltage corresponding to that photocurrent is then employed so that optimal optical modulator signal quality is achieved. An advantageous application of this technique is in wavelength division multiplexed (WDM) systems in which different optical modulators are operating at different wavelengths. In such a system, a different voltage bias will typically be determined for each optical modulator.

REFERENCES:
patent: 5546218 (1996-08-01), Komatsubara et al.
patent: 5706117 (1998-01-01), Imai et al.

Affiliated with

Also associated with

Rating

Methods and apparatus for monitoring and controlling optical mod does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Methods and apparatus for monitoring and controlling optical mod, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Methods and apparatus for monitoring and controlling optical mod will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-587513