Accession Number : ADP008091

Title :   Electro-Optically Tunable General Polarization Transformer on GaInAsP/InP Using Analog and Digital Control Voltage Patterns,

Corporate Author : HEINRICH-HERTZ-INST FUER NACHRICHTENTECHNIK BERLIN G M B H (GERMANY F R)

Personal Author(s) : Schlak, M. ; Albrecht, P. ; Heidrich, H. ; Nolting, H. P. ; Reier, F.

Report Date : APR 1992

Pagination or Media Count : 2

Abstract : Polarization transformers are key components for future optical signal processing circuits e.g. in a coherent optical polarization diversity receiver OIC. Here the received TE- and TM-polarization modes are splitted, heterodyned and detected separately. Since the integrated laser only emits in TE-polarization a TE/TM-mode converter is necessary to produce the required TM-polarization. In the framework of the RACE project Coherent Multichannel System a TE/TM-mode converter in the GaInAs-InP-system for an operating wavelength of 1.56 micrometer has been developed and investigated. Fabricated devices showed a 45 deg mode conversion necessary in the OIC at a maximum voltage of 50 V.

Descriptors :   *OPTICAL CIRCUITS, CIRCUITS, CONVERSION, MULTICHANNEL, POLARIZATION, PROCESSING, RECEIVERS, SIGNAL PROCESSING, SIGNALS, TRANSFORMERS, VOLTAGE, LASER APPLICATIONS, FREQUENCY CONVERTERS, GERMANY.

Subject Categories : Electrooptical and Optoelectronic Devices

Distribution Statement : APPROVED FOR PUBLIC RELEASE