Digital optical phase control in ridge-waveguide phase modulators

Journal Article · Mon Mar 01 00:00:00 EST 1993 · IEEE Photonics Technology Letters (Institute of Electrical and Electronics Engineers); (United States)

DOI:https://doi.org/10.1109/68.205622· OSTI ID:6436777

Vawter, G A; Hietala, V M; Kravitz, S H ^[1]

---

1. Sandia National Lab., Albuquerque, NM (United States)

The authors report a new digital optical phase modulation concept based on depletion-edge-translation p-n junction GaAs/AlGaAs ridge-waveguide modulators. Digital modulation is achieved by integrating in series several discrete waveguide modulators with lengths related by successive factors of two. To illustrate the concept, the authors fabricated and demonstrated a three-bit digital phase modulator with 45[degree] resolution. This structure represents the first photonic integrated circuit that performs direct digital-electronic to analog-optical conversion.

• DOE Contract Number: AC04-76DP00789
• OSTI ID: 6436777
• Journal Information: IEEE Photonics Technology Letters (Institute of Electrical and Electronics Engineers); (United States), Vol. 5:3; ISSN 1041-1135
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
WAVEGUIDES
OPTICAL MODES
ANALOG SYSTEMS
DESIGN
DIGITAL SYSTEMS
FABRICATION
INTEGRATED CIRCUITS
MODULATION
OPTICAL SYSTEMS
P-N JUNCTIONS
PHASE SHIFT
PHASE VELOCITY
TRANSFER FUNCTIONS
ELECTRONIC CIRCUITS
FUNCTIONS
JUNCTIONS
MICROELECTRONIC CIRCUITS
OSCILLATION MODES
SEMICONDUCTOR JUNCTIONS
VELOCITY
426000* - Engineering- Components
Electron Devices & Circuits- (1990-)