|   | 1. | TERABEAM                  desires to transfer all of its right, title, and interest in and                  to the                  U.S. patents listed in Attachment A (collectively, the                  “Patents”). |
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|   | 2. | SPH                  desires to acquire and TERABEAM is willing to assign to SPH all                  of                  TERABEAM’s right, title, and interest in and to the Patents, and any                  inventions disclosed and claimed therein, along in each case with                  any U.S.                  reissue or reexamination of any of the Patents, and with any foreign                  patent or application which claims priority to any of the Patents                  (including foreign divisional, continuation, continuation-in-part,                  reissue, reexamination, inventor certificate, utility model, or                  any other                  intellectual property or other applications), and all foreign patents,                  inventor certificates, utility models, or other intellectual property                  rights that may be granted thereon, all rights to claim priority                  on the                  basis of any such patent or application, and any and all reissues,                  reexaminations, and extensions of any of the foregoing (collectively,                  the                  “Assigned Patents”). |
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|   | 3. | Pursuant                  to Section 7 below, TERABEAM shall transfer, grant, convey, assign,                  and                  relinquish exclusively to SPH all of TERABEAM’s right, title, and interest                  in and to the Assigned Patents.  TERABEAM further shall transfer                  and assign to SPH all causes of action, rights, and remedies arising                  under                  the Assigned Patents prior to, on, or after the Effective Date                  of this                  Agreement, including the right to sue to enforce the Assigned Patents                  and                  receive damages, including past, present, and future damages, for                  infringement thereof. |
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|   | 4. | In                  consideration of TERABEAM’s assignment as set forth herein, (a) on or                  before June 10, 2007, SPH will pay to TERABEAM the sum of ONE MILLION                  dollars ($1,000,000) by wire transfer of immediately available                  funds                  pursuant to wire transfer instructions provided by TERABEAM within                  fifteen                  (15) days of the Effective Date, (b) on or before June 30, 2007                  SPH will                  pay to TERABEAM the sum of ONE MILLION, FIVE HUNDRED THOUSAND dollars                  ($1,500,000) by wire transfer of immediately available funds pursuant                  to                  wire transfer instructions provided by TERABEAM within fifteen                  (15) days                  of the Effective Date, and (c) SPH hereby grants to TERABEAM the                  rights                  described on Attachment C. |
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|   | 5. | TERABEAM                  and SPH acknowledge that this Agreement will be filed with the                  Securities                  and Exchange Commission, and thus made publicly                  available.  TERABEAM shall file the attachments to this                  Agreement only to the extent required in the opinion of its counsel                  and,                  if filing is required, TERABEAM shall use its reasonable efforts                  to have                  as much of the attachments redacted and treated                  confidentially.  Subject to the foregoing, the parties agree                  that the provisions of the Confidentiality Agreement, dated as                  of April                  24, 2007, apply to the negotiation of and transactions contemplated                  by                  this Agreement. |
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|   | 6. | In                  the event that, in any action involving any of the Assigned Patents,                  there                  is any allegation of invalidity, unenforceability, or noninfringement                  of                  any of the Assigned Patents, SPH and TERABEAM agree to cooperate                  reasonably with each other in any such action at SPH’s                  expense. |
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|   | 7. | TERABEAM                  will execute and deliver to SPH the Assignment substantially in                  the form                  of Attachment B hereto with respect to each of the Assigned Patents,                  in                  each case before June 10, 2007 (to an escrow agent reasonably acceptable                  to both TERABEAM and SPH for delivery to SPH after TERABEAM receives                  the                  consideration contemplated in Section 4 above) to evidence the                  transfer of                  TERABEAM’s rights in all the Assigned Patents from TERABEAM to SPH to the                  fullest extent possible. TERABEAM further agrees to provide testimony                  in                  connection with any proceeding affecting the right, title, interest,                  or                  benefit of SPH in and to the Assigned Patents, to execute and deliver                  all                  other papers that may be necessary or desirable to transfer TERABEAM’s                  right, title, and interest to the Assigned Patents in SPH, its                  successors                  and assigns, to execute all divisional, continuation, reissue,                  and                  reexamination applications and assignments, to make all rightful                  oaths,                  and to perform any other acts deemed reasonably necessary to carry                  out the                  intent of this Agreement, in each case at SPH’s expense except to the                  extent any such costs, expenses, fees, or damages arise from the                  misconduct or negligence of TERABEAM or its current employees,                  agents, or                  representatives and except that TERABEAM’s efforts with respect to former                  employees shall be limited to reasonable                  efforts. |
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|   | 8. | In                  furtherance of this Agreement, TERABEAM hereby acknowledges that,                  from                  June 30, 2007 forward but subject to the other terms of this Agreement,                  SPH has succeeded to all of TERABEAM’s right, title, and standing to                  receive all rights and benefits pertaining to the Assigned Patents,                  institute and prosecute all suits and ­proceedings, and take all                  actions that SPH, in its sole discretion, may deem necessary or                  proper to                  collect, assert, or enforce any claim, right, or title of any kind                  under                  any and all of the Assigned Patents, whether arising before, on,                  or after                  the Effective Date, to defend and compromise any and all such actions,                  claims, suits, or proceedings relating to such transferred and                  assigned                  rights, title, interest, and benefits, and to do all other such                  acts and                  things in relation thereto as SPH, in its sole discretion, deems                  advisable. |
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|   | 9. | TERABEAM                  represents and warrants that no consents of any other parties are                  necessary under any agreements concerning any of the Assigned Patents                  in                  order for the transfer and assignment of any of the Assigned Patents                  under                  this Agreement to be legally effective, that no obligation of TERABEAM                  will be breached by the assignments made herein, and that TERABEAM                  shall                  not execute any agreement with any third party in conflict                  herewith. |
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|  | 10. | TERABEAM                  represents and warrants that, to the best of TERABEAM’s knowledge, upon                  consummation of this Agreement and execution of Assignments substantially                  in the form of Attachment B, SPH shall have good and marketable                  title to                  the Assigned Patents, free and clear of any and all liens, mortgages,                  encumbrances, pledges, security interests, licenses, or charges                  of any                  nature |
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|  | 11. | In                  the case of Force Majeure preventing or hindering either party                  from                  performing its obligations under this Agreement, such Force Majeure                  shall                  not constitute a breach or default under this Agreement provided                  that: (i)                  the party prevented or hindered from performing (the “Affected Party”)                  shall give written notice to the other party (the “Non-Affected Party”),                  as soon as practically possible, containing reasonable particulars                  of the                  Force Majeure in question and the effect of such Force Majeure                  as it                  relates to the obligations of the Affected Party; and (ii) the                  Affected                  Party works diligently to correct the reason for such delay, excuses                  performance by the Non-Affected Party during the period of such                  delay, and                  reimburses the Non-Affected Party for any losses incurred by the                  Non-Affected Party by reason of such                  delay. |
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|  | 12. | This                  Agreement shall inure to the benefit of, and be binding on, the                  parties                  hereto together with their respective legal representatives, and                  successors and assigns. |
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|  | 13. | This                  Agreement shall be governed by and construed in accordance with                  the laws                  of the State of New York and of the United                  States. |
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|  | 14. | This                  Agreement merges and supersedes all prior and contemporaneous agreements,                  assurances, representations, and communications between or among                  the                  parties hereto concerning the matters set forth                  herein. |
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|  | 15. | SPH                  hereby disclaims any and all warranties whatsoever in connection                  with this                  Agreement and any goods, services, and information provided hereunder,                  whether express or implied. |
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|  | 16. | The                  waiver by either party of a breach or default of any of the provisions                  of                  the Agreement by the other party shall not be construed as a waiver                  of any                  succeeding breach of the same or any other provisions, nor shall                  any delay                  or omission on the part of either party to exercise or avail itself                  of any                  right, power or privilege that it has or may have hereunder, operate                  as a                  waiver of any breach or default by the other                  party. |
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|  | 17. | If                  any provision of the Agreement shall be held by a court of competent                  jurisdiction to be illegal, invalid or unenforceable, that provision                  shall                  be limited |
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|  | 18. | All                  notices, requests, demands, consents, approvals, designations and                  other                  communications called for or contemplated by this Agreement shall                  be in                  writing and shall be deemed given to SPH or TERABEAM (i) when delivered                  to                  such party by hand or by overnight courier or delivery service,                  or (ii)                  three business days after being sent to such party by registered                  or                  certified mail (return receipt requested, postage prepaid), in                  each case                  at the address(es) for such party set forth above (or at such other                  address as such party may designate by notice in the manner                  aforesaid). |
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| TERABEAM,                  INC.                          | SPH                  AMERICA, LLC       |
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|                                                     |                                    |
| By:  /s/                  Robert E. Fitzgerald | By:                  /s/ Choongsoo Park |
| Date:  4/24/07                                 | Date:  4/24/07                |
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