Technology for Agile Coherent Optical Transmission Architecture (TACOTA)

The summary for the Technology for Agile Coherent Optical Transmission Architecture (TACOTA) Federal Grant is detailed below. It contains information such as the Catalog of Federal Domestic Assistance (CFDA) number, who is eligible for the grant, how much grant money will be awarded, important deadlines, and a sampling of similar government grants. Verify the accuracy of the data FederalGrants.com provides by visiting the webpage noted in the Link to Full Announcement section or by contacting the appropriate person listed in the Grant Announcement Contact section. If these sections are incomplete, please visit the website of the government agency that is offering this grant.


	Federal Grant Title:	Technology for Agile Coherent Optical Transmission Architecture (TACOTA)
	CFDA Number:	12.910
	CFDA Description:	Research and Technology Development
	Federal Agency Name:	Defense Advanced Research Projects Agency
	Category of Funding Activity:	Science and Technology
	Category Explanation:	Information not provided
	Opportunity Category:	Discretionary
	Funding Opportunity Number:	BAA05-36
	Document Type:	Modification to Previous Grants Notice
	Funding Instrument Type:	Cooperative Agreement Grant Other Procurement Contract
	Posted Date:	Jul 12, 2005
	Creation Date:	Jul 12, 2005
	Original Closing Date for Applications:	Jul 22, 2005
	Current Closing Date for Applications:	Information not provided
	Archive Date:	Apr 26, 2006
	Expected Number of Awards:	Information not provided
	Estimated Total Program Funding:	Information not provided
	Federal Grant Award Ceiling:	Information not provided
	Federal Grant Award Floor:	Information not provided
	Cost Sharing or Matching Requirement:	No

Applicants Eligible for this Grant: Unrestricted (i.e., open to any type of entity above), subject to any clarification in text field entitled "Additional Information on Eligibility"
Additional Information on Eligibility: Information not provided
Grant Description: This is a modification to the BAA 05-36 entitled Technology for Agile Coherent Optical Transmission Architecture (TACOTA) which was posted on April 26, 2005. You are notified that the following changes are made: Proposal due date is revised to August 26, 2005. Areas of interest are revised as described below. Program scope is revised as described below. Areas of Interest Modifications to the original BAA are made in the individual areas of interest as follows. I. 1550 nm Coherent Optical Transmitter & Receiver Technology This modification clarifies the definition of receiver sensitivity that is discussed in the original BAA. Sensitivity is defined as the number of fiber-coupled 1550 nm photons per bit at the TACOTA receiver input required to achieve the desired bit error rate. It is recommended that proposals include optical power budgets for TACOTA receivers that provide estimated optical losses referenced to fiber-coupled 1550 nm optical power in the single-mode fiber at the receiver input. Although sensitivity is characterized by 1550 nm photons, receiver sensitivity calculations and analyses should include any effects resulting from two-way (up and down-conversion) wavelength translation. II. Phase-Sensitive Wavelength Translation Technology This modification is revised so that 1550 nm intra-band wavelength translation is no longer within the development scope of TACOTA. Additionally, offerors need only address one of the remaining cited translation bands. That is, successful offerors will develop and demonstrate one of the following two wavelength translation scenarios: (1) phase-sensitive translation between the 1550/500 nm bands; or (2) phase-sensitive translation between the 1550/3800 nm bands. Offerors who choose to include both translation scenarios are encouraged to provide a cost breakdown that itemizes the two efforts. III. Application-based Link Demonstration This modification downscopes the level of effort required to test system-level TACOTA performance. Offerors need only execute laboratory-based testing sufficient to demonstrate system-level TACOTA link performance targets, as additional more rigorous testing will take place at government laboratory facilities. It is not imperative that TACOTA equipment be fully ruggedized; equipment should be transportable with minimal need for recalibration and be able to be easily configured and integrated with other components and/or the testbed. TACOTA links will be tested over various ranges both with and without receive adaptive optics correction. These links will be evaluated to determine bit error rate, sensitivity, throughput and the ability to handle atmospheric impairments. Proposals should address transmission impairments relevant to free-space optical communications, as well as potential design paths to alleviate such effects. Implementation of these mitigation approaches is not necessarily required as part of the TACOTA program. In particular, transmission through either the atmosphere or through water introduces both longitudinal and transverse phase aberrations to a coherent optical communication beam. Longitudinal phase aberrations change the overall optical phase of the beam on a timescale of hundreds of Hertz, which affects the receivers ability to both amplify and extract the information in the beam. Transverse aberrations will change the optical phase across the wavefront, thus limiting the size of the receive aperture over which the received beam can be considered to be coherent. Transverse aberrations have the effect of reducing the coupling efficiency into single mode fiber and dramatically increasing scintillation over that seen in incoherent free-space optical systems, which generally use multimode fiber receivers. Both longitudinal and transverse phase aberrations are highly path-dependent and their effects should be carefully considered in developing proposal responses to the BAA. Program Scope This modification specifies the length of the Program development phases. The TACOTA program will consist of a 18 month Phase I effort with Go Ahead critical milestones at the end of 15 months. This will be followed by a 18-month Phase II option to achieve the full performance targets. Offerors should provide a plan to meet all the performance metrics specified in the BAA or a clear justification of why the performance metric(s) cannot be met. These performance targets should be included in Enclosure 2 and should reflect the performance goals established in Section I. Point of Contact S. Pappert, DARPA Program Manager, Phone (571) 218-4679, Fax (703) 696-2206, Email spappert@darpa.mil
Link to Full Grant Announcement: Technology for Agile Coherent Optical Transmission Architecture (TACOTA)
http://www.darpa.mil/baa/
Grant Announcement Contact: Ulrey, Scott, Director, Technology Division, Phone 703 696-2434, Fax 703-812-3316, Email sulrey@darpa.mil sulrey@darpa.mil Ulrey, Scott
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