1. A method for fabricating a deep trench device with a single sided connecting structure, comprising:
forming a buried trench capacitor in a bottom portion of a trench in a substrate, wherein the substrate has a drain region adjacent to the trench;
forming a collar insulator on top of the buried trench capacitor and disposed on a sidewall of the trench, wherein the collar insulator is formed with a tapered height, and a lowermost height of the collar insulator exposes a portion of the sidewall of the trench and a uppermost height of the collar insulator fully covers a portion of the sidewall of the trench;
forming a conductive layer on top of the buried trench capacitor and being surrounded by the collar insulator;
forming a connecting structure on top of the conductive layer to connect the conductive layer to the drain region, wherein the connecting structure comprises a connecting member electrically connected with the conductive layer, and an epitaxial silicon layer is in direct contact with the portion of the sidewall of the trench where the lowermost portion of the collar insulator exposes; and
forming a cap layer in the trench and on top of the connecting structure.
2. The method as claimed in claim 1, further comprises forming an insulating layer between the epitaxial silicon layer and the conductive layer.
3. The method as claimed in claim 2, further comprises forming a metal barrier layer surrounded and on bottom of the connecting member, such that the metal barrier layer is electrically connected to the conductive layer.
4. The method as claimed in claim 3, wherein the epitaxial silicon layer is formed by a selective epitaxy process.
5. The method as claimed in claim 3, wherein the epitaxial silicon layer has a graded doping concentration formed by partially doping and thermally diffusing thereof.
6. The method as claimed in claim 1, wherein the connecting member comprises tungsten.
7. The method as claimed in claim 1, wherein the conductive layer comprises doped polysilicon.
8. The method as claimed in claim 1, wherein the cap layer comprises silicon oxide.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A method for ranging a device in a point-to-multipoint network, comprising:
receiving a device identifier representing a drop in the point-to-multipoint network where the device is installed;
associating the device identifier with the device; and
transmitting the device identifier and a unique identifier associated with the device over the point-to-multipoint network to a central unit for ranging the device in the point-to-multipoint network.
2. The method of claim 1, wherein the device comprises an optical network termination (ONT), wherein the point-to-multipoint network comprises a passive optical network (PON), and wherein the device identifier comprises an ONT identifier representing the drop in the PON where the ONT is installed.
3. The method of claim 1, wherein the device identifier is received from a plurality of dual inline package (DIP) switches associated with the device.
4. The method of claim 1, wherein the device identifier is received from a user interface associated with the device.
5. The method of claim 1, wherein a total number of device identifiers is at least equal to a total number of devices in the point-to-multipoint network.
6. The method of claim 1, wherein the device identifier and the unique identifier are transmitted over the point-to-multipoint network in an allocated time slot managed under a time division multiple access (TDMA) protocol.
7. The method of claim 1, further comprising:
converting the device identifier to an optical signal prior to transmitting the device identifier and the unique identifier over the point-to-multipoint network.
8. A system for ranging a device in a point-to-multipoint network, comprising:
a memory for storing a program containing code for ranging the device in the point-to-multipoint network, comprising;
a processor functionally coupled to the memory, the processor being responsive to computer-executable instructions contained in the program and operative to:
receive a device identifier representing a drop in the point-to-multipoint network where the device is installed;
associate the device identifier with the device; and
transmit the device identifier and a unique identifier associated with the device over the point-to-multipoint network to a central unit for ranging the device in the point-to-multipoint network.
9. The system of claim 8, wherein the device comprises an optical network termination (ONT), wherein the point-to-multipoint network comprises a passive optical network (PON), and wherein the device identifier comprises an ONT identifier representing the drop in the PON where the ONT is installed.
10. The system of claim 8, further comprising:
a plurality of dual inline package (DIP) switches associated with the device operative to provide the device identifier.
11. The system of claim 8, further comprising:
a user interface associated with the device that is configured for a user to enter the device identifier.
12. The system of claim 8, wherein a total number of device identifiers is at least equal to a total number of devices in the point-to-multipoint network.
13. The system of claim 8, wherein the device identifier and the unique identifier are transmitted over the point-to-multipoint network in an allocated time slot managed under a time division multiple access (TDMA) protocol.
14. A computer-readable medium having instructions stored thereon for execution by a processor to perform a method for ranging a device in a point-to-multipoint network, the method comprising:
receiving a device identifier representing a drop in the point-to-multipoint network where the device is installed;
associating the device identifier with the device; and
transmitting the device identifier and a unique identifier associated with the device over the point-to-multipoint network to a central unit for ranging the device in the point-to-multipoint network.
15. The computer-readable medium of claim 14, wherein the device comprises an optical network termination (ONT), wherein the point-to-multipoint network comprises a passive optical network (PON), and wherein the device identifier comprises an ONT identifier representing the drop in the PON where the ONT is installed.
16. The computer-readable medium of claim 14, wherein the device identifier is received from a plurality of dual inline package (DIP) switches associated with the device.
17. The computer-readable medium of claim 14, wherein the device identifier is received from a user interface associated with the device.
18. The computer-readable medium of claim 14, wherein a total number of device identifiers is at least equal to a total number of devices in the point-to-multipoint network.
19. The computer-readable medium of claim 14, wherein the device identifier and the unique identifier are transmitted over the point-to-multipoint network in an allocated time slot managed under a time division multiple access (TDMA) protocol.
20. The computer-readable medium of claim 14, wherein the method further comprises:
converting the device identifier to an optical signal prior to transmitting the device identifier and the unique identifier over the point-to-multipoint network.