Title:
【発明の名称】ファブリー・ペロー変調器
Document Type and Number:
Japanese Patent JP2837265
Kind Code:
B2
Abstract:
An asymmetric Fabry-Perot modulator comprises a multiple quantum well (MQW) p-i-n diode (8,10,12) defined by a front surface of reflectivity 0.3 and a back surface of reflectivity 0.95. The cavity length L is such that resonance occurs close to the long wavelength side of the unbiased MQW absorption edge so that application of a bias signal to the MQW (12) causes the reflectivity of the cavity to become close to zero. This arrangement provides a high contrast modulator less sensitive to temperature variations and deviations from ideal reflectivities of the front and back surfaces than high-finesse Fabry-Perot modulators.
Inventors:
HOWAITOHETSUDO MAAKU
Application Number:
JP50363590A
Publication Date:
December 14, 1998
Filing Date:
February 22, 1990
Export Citation:
Assignee:
BURITEITSUSHU TEREKOMYUNIKEESHONZU PLC
International Classes:
G02F1/21; (IPC1-7): G02F1/015
Attorney, Agent or Firm:
Takehiko Suzue (3 outside)