Control unit for optical modulators producing multiplexed optical output signal
US5805321A · kind A · utility
42Cited by
3References
11Claims
0Family size
Assignee
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Key dates
| Filing date | Sep 11, 1996 |
| Grant date | Sep 8, 1998 |
| Priority date | — |
| Expiry date | Sep 11, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J14/08
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A control unit for controlling an optically modulating apparatus in an optical transmitter, including plural optical modulators producing an optical output signal consisting of a series of optical pulses for transmitting data under OTDM or WDM, so that pre-chirping magnitudes of the modulators are changed together with drift compensation, for preventing waveform deterioration due to an optical transmission line from occurring. The pre-chirping magnitudes are changed by shifting operating points of modulators only concerning pre-chirping, without affecting other transmitting characteristics of the optical output signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.