Delay interferometer optical pulse generator
US6760142B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 13, 2002 |
| Grant date | Jul 6, 2004 |
| Priority date | — |
| Expiry date | Oct 10, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/5561
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
In accordance with the invention, a train of RZ or CSRZ pulses is produced by passing phase modulated laser light through a delay interferometer. The parameters of the phase modulation and the delay interferometer are calculated from the desired pulse train characteristics (e.g. repetition rate, RZ or CSRZ, duty cycle). A directly modulated CW laser, or a CW laser followed by a phase modulator, produces the constant amplitude, phase modulated light. The phase modulated signal is split into two paths. One signal path is delayed with respect to the other by the calculated delay. The signals are recombined in an optical coupler to produce an RZ pulse train and/or a CSRZ pulse train.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.