Charlie Kuznia

BIT-enabled VCSEL-based parallel optic transceivers

We present technology that enables high-resolution optical time domain reflectometer (OTDR) within aerospace transceivers. Transceivers with built-in-test (BIT) OTDR can characterize the fiber plant and isolate faults among the multiple fiber segments within the aerospace vehicles: at the board level, backplane level, or within multiple bulkhead links throughout the airframe. BIT OTDR has been proposed for improving reliability and reducing maintenance costs on aerospace platforms.

Performance Testing of Bit-Enabled Aerospace Transceiver

The measurements in this paper were taken at room temperature. We plan to present measurements over temperature that include measurements of the receiver signal strength (RSSI) and transceiver signal strength indicator (TSSI) during the conference.

Integration of Fiber Optic Cable Diagnostics within Aerospace Transceivers

OTDR can enable fault prediction (and circumvention with a certain level of redundancy) and it is possible to enter a new era of fiber optic maintenance concepts. Through fault prediction, is possible to replace or inspect suspect components before catastrophic failures occur. Redundant hardware permits completion of a mission segment with failed components and can lead to just-in-time provisioning of spares at scheduled maintenance periods. Topological loss maps with 10 cm resolution of the entire cable plant can be stored within each transceivers memory and used as a reference for routine inspections

Novel High-Resolution OTDR Technology for Multi-Gbps Transceivers

We present high-resolution optical time domain reflectometer (OTDR) integration into fiber optic transceivers. Transceivers with built-in-test (BIT) OTDR can characterize the fiber plant and isolate faults to reduce network installation and maintenance costs.

Harsh environment transceivers for the post-module ERA

In summary, VCSEL-based transceivers can be fabricated as compact embeddable components. VCSELs are available with 25 Gbps data rates per channel and are the lowest power optical components available (due to low lasing thresholds and uncooled operation).

Advances in Multifunctional Fiber Optic Transceiver Packaging

This paper presents a method of packaging a transceiver with four transmit and four receiver channels, including functions of built in test (BIT). BIT functions can monitor the transceiver health and fiber link loss

Film for enhanced operation in avionic fiber connector interfaces

We describe the use of an end-face film to enhance optical coupling, reduce required spring force, and protect the fiber end-faces in MT-based connector systems. We present analytical and experimental results using a 25 micron film on 50-micron graded index fibers in an MPO connector.

Individual thermal control and in situ optical monitoring for optoelectronic component burn-in, qualification and reliability testing

We present a system burning-in, qualifying and reliability photonic components individual thermal control each device under and performs during We present the application of this to VCSEL-based parallel fiber for aerospace applications.

Chip-scale-packaging applied to optical transceivers

We discuss the application chip-scale packaging to create compact transceivers. Low-cost is achieve with wafer-scale packaging and a minimum sub-component count. These small solderable components offer increased density and PCB placement flexibility for optical interconnects.

Multi-mode fiber optic repeater

We demonstrate the capability of restoring high speed optical data signals after experiencing bandwidth and attenuation impediments that represent aircraft MMF cable plant.