Optical module and optical switch constituting the same
First Claim
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1. A 1×
- N optical switch comprising;
a two-port optical switch connected to an input waveguide, and capable of continuously adjusting its optical output intensity from a first output to a second output;
a switch section including one or more two-port optical switches connected in cascade to the output(s) of said two-port optical switch, and having its outputs connected to N output waveguides, where N is an integer equal to or greater than three;
a plurality of gate optical switches, each of which is connected to one of the output waveguides and capable of continuously adjusting its optical output from transmission to interruption;
a plurality of switch driving power supply circuits for driving said two-port optical switches, said two-port optical switches being divided into groups, each of which includes only one two-port optical switch that is brought into conduction at a time, and the two-port optical switches in a same group sharing one of said switch driving power supply circuits;
a gate driving power supply circuit for driving said gate optical switches, all the gate optical switches sharing said gate driving power supply circuit; and
electrical digital switches, each of which is connected to one of said two-port optical switches or said gate optical switches for interrupting a driving current from one of said driving power supply circuits.
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Abstract
An optical module controls its output characteristics electrically and an optical switch constitutes the optical module. An optical waveguide circuit (PLC) and an electronic circuit (IC) for driving the PLC are mounted on the same substrate. The IC is composed of a bare chip to be molded afterward. Wiring of the IC is grouped and integrated on the PLC substrate to achieve higher density and miniaturization of the optical module.
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Citations
6 Claims
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1. A 1×
- N optical switch comprising;
a two-port optical switch connected to an input waveguide, and capable of continuously adjusting its optical output intensity from a first output to a second output; a switch section including one or more two-port optical switches connected in cascade to the output(s) of said two-port optical switch, and having its outputs connected to N output waveguides, where N is an integer equal to or greater than three; a plurality of gate optical switches, each of which is connected to one of the output waveguides and capable of continuously adjusting its optical output from transmission to interruption; a plurality of switch driving power supply circuits for driving said two-port optical switches, said two-port optical switches being divided into groups, each of which includes only one two-port optical switch that is brought into conduction at a time, and the two-port optical switches in a same group sharing one of said switch driving power supply circuits; a gate driving power supply circuit for driving said gate optical switches, all the gate optical switches sharing said gate driving power supply circuit; and electrical digital switches, each of which is connected to one of said two-port optical switches or said gate optical switches for interrupting a driving current from one of said driving power supply circuits. - View Dependent Claims (2, 3, 4, 5, 6)
- N optical switch comprising;
Specification