UNITED STATES SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549
FORM 3
INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES
1. Name and Address of Reporting Person
Sevin Rosen Fund IV, L.P.
Two Galleria Tower
13455 Noel Road, Suite 1670
Dallas, TX 75240
2. Date of Event Requiring Statement (Month/Day/Year)
February 7, 1997
3. IRS or Social Security Number of Reporting Person (Voluntary)
4. Issuer Name and Ticker or Trading Symbol
CIENA Corporation
("CIEN")
5. Relationship of Reporting Person(s) to Issuer (Check all applicable)
( ) Director (X) 10% Owner ( ) Officer (give title below) ( ) Other
(specify below)
6. If Amendment, Date of Original (Month/Day/Year)
February 5, 1997
7. Individual or Joint/Group Filing (Check Applicable Line)
(X) Form filed by One Reporting Person
( ) Form filed by More than One Reporting Person
___________________________________________________________________________________________________________________________________
Table I -- Non-Derivative Securities Beneficially Owned |
___________________________________________________________________________________________________________________________________|
1. Title of Security |2. Amount of |3. Ownership |4. Nature of Indirect |
| Securities | Form: | Beneficial Ownership |
| Beneficially | Direct(D) or | |
| Owned | Indirect(I) | |
___________________________________________________________________________________________________________________________________|
Common Stock |204,325 |D | |
- - -----------------------------------------------------------------------------------------------------------------------------------|
___________________________________________________________________________________________________________________________________|
___________________________________________________________________________________________________________________________________
Table II -- Derivative Securitites Beneficially Owned |
___________________________________________________________________________________________________________________________________|
1.Title of Derivative |2.Date Exer- |3.Title and Amount | |4. Conver-|5. Owner- |6. Nature of Indirect |
Security | cisable and | of Underlying | |sion or |ship | Beneficial Ownership |
| Expiration | Securities | |exercise |Form of | |
| Date(Month/ |-----------------------|---------|price of |Deriv- | |
| Day/Year) | |Amount |deri- |ative | |
| Date | Expira- | |or |vative |Security: | |
| Exer- | tion | Title |Number of|Security |Direct(D) or | |
| cisable | Date | |Shares | |Indirect(I) | |
___________________________________________________________________________________________________________________________________|
Series A Convertible Pre|(2) |(2) |Common Stock |5,743,945| |D | |
ferred Stock | | | | | | | |
- - -----------------------------------------------------------------------------------------------------------------------------------|
Series B Convertible Pre|(2) |(2) |Common Stock |3,704,990| |D | |
ferred Stock | | | | | | | |
- - -----------------------------------------------------------------------------------------------------------------------------------|
Series C Convertible Pre|(2) |(2) |Common Stock |1,428,570| |D | |
ferred Stock | | | | | | | |
- - -----------------------------------------------------------------------------------------------------------------------------------|
Series C Convertible Pre|(2) |(2) |Common Stock |714,285 | |I |By Sevin Rosen Fund V |
ferred Stock | | | | | | | |
- - -----------------------------------------------------------------------------------------------------------------------------------|
| | | | | | |L.P. (1) |
- - -----------------------------------------------------------------------------------------------------------------------------------|
___________________________________________________________________________________________________________________________________|
Explanation of Responses:
(1) Sevin Rosen Fund IV L.P. is an affiliate of Sevin Rosen Fund V L.P. and
may be deemed to beneficially own the
shares held bysuch
entity.
(2) Upon the closing of the Issuer's initial public offering of its Common
Stock, each issued and outstanding share
of its convertible preferred stock will automatically convert into five shares
of Common Stock.
By: SEVIN ROSEN FUND IV
L.P.
By: SRB ASSOCIATES IV L.P., its general
partner
By: /s/ John V.
Jaggers
John V. Jaggers, General
Partner
SIGNATURE OF REPORTING PERSON
See Signature on Last Page
DATE
October 10, 1997
