Small‐sized, high‐speed optical scanners are very useful in optical information processing, optical communications, optical measurements, etc. Although there has been research on various devices of this kind, satisfactory characteristics are yet to be realized. This paper proposes a guided‐type optical scanner in which the propagation constant of each waveguide is varied independently by electronic means, and its characteristics are simulated. It is found that the number of resolvable spots is proportional to the number of waveguides and more than 670 resolvable spots can be obtained for the case of 1000 waveguides. Further, the number of resolvable spots is not influenced much even if phase errors of about 1 percent (2π/100) are introduced in each waveguide. Moreover, it is clarified that the coupling coefficient between the waveguides must be kept below 100 m−1 for the device length of 1 mm, and several other points are explained.
|Number of pages||9|
|Journal||Electronics and Communications in Japan (Part II: Electronics)|
|Publication status||Published - 1990 Jan 1|
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Computer Networks and Communications
- Electrical and Electronic Engineering